*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root{
    --primarycolor: #222222;
    --matrixcolor_2: #ff754be3;
    --textcolor: #ffffff;
    --boxshadowcolor1: #797979be;
    --boxshadowcolor2: rgba(0, 0, 0, 0.794);
}
body{
    background-color: var(--primarycolor);
    display: flex;
    flex-flow: column;
    align-items: center;
}
.heading-container{
    display: flex;
    flex-flow: row;
    justify-content: center;
    padding: 2rem;
}

.heading{
    color: #273469;
    color: var(--textcolor);
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    overflow: visible;
    width: 450px;
    text-align: center;
    position: relative;
}
.heading::after{
    position: absolute;
    content: '';
    top: 9%;
    bottom: -5%;
    left: 40%;
    right: 26.5%;
    background-color: transparent;
    border-bottom: 4px solid #ff754be3;
}
.heading::before{
    position: absolute;
    content: '';
    top: 0%;
    bottom: 0%;
    left: 25%;
    right: 62%;
    background-color: transparent;
    border: 4px solid #ff754be3;
    transform: skew(180deg, -20deg);
    z-index: -1;
}
.basic-opt-contain, .misc-opt-contain{
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    padding-bottom: 4rem;
}
.heading-for-selection{
    font-family: 'Montserrat', sans-serif;
    font-size: 2.8rem;
    padding-top: 4rem;
    padding-bottom: 15px;
    color: #d3846c;
}

.container-main, .container-main-2, .container-main-select, .container-main-misc-3x3, .container-main-misc-2x2{
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
    align-items: center;
    margin: 20px 50px; 
}
.container-main-misc-3x3, .container-main-misc-2x2{
    margin-bottom: 240px;
    border-radius: 5px;
}
.container-main-misc-3x3{
    margin-top: 30px;
    padding: 35px 0px;
    border: 4px solid #ff754be3;
}
.container-main-misc-2x2{
    margin-top: 30px;
    padding: 35px 0px;
    border: 4px solid #ff754be3;
}
.container-main-select{
    margin: 5px;
}
.container-main-3{
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 50px;
}

#container-1{
    align-self: center;
}
#container-2{
    display: flex;
    height: 100px;
    width: 150px;
}
#container-3, #container-4, #container-5{
    align-self: center;
}
.container-4-2x2, .container-4-3x3{
    font-size: 25px;
    color: #ffffff;
    transform: translate(0) scale(1);
    transition: transform 0.3s ease-in-out;
}
.equal-to{
    font-size: 25px;
    color: #ffffff;
    transform: translateX(60%) scale(1.5);
    transition: transform 0.3s ease-in-out;
}
.container-main-2, .container-main{
    padding: 3rem 0rem;
    border: 4px solid #ff754be3;
    border-radius: 5px;
}
.container-main-2, .container-main-misc-2x2, .container-main, .container-main-misc-3x3{
    width: min(90%, 1200px);
}
#matrix-selection, #matrix-selection-misc{
    display: flex;
    justify-content: center;
    align-self: center;
}
#operations, #operations-2, #matrix-selection, #misc-operations, #misc-operations-2, #matrix-selection-misc{
    border: 1px solid var(--primarycolor);
    color: var(--textcolor);
    background-color: var(--primarycolor);
    font-family: 'Montserrat', sans-serif;
    border-radius: 5px;
    box-shadow: 0.2rem 0.2rem 10px 0rem #e1d5ff;
    box-shadow: 0.29rem 0.29rem 1rem 0rem var(--boxshadowcolor2), -0.1rem -0.1rem 0.8rem 0rem var(--boxshadowcolor1);
    height: 50px;
    width: 150px;
    align-self: center;
    outline: none;
}

input{
    background-color: var(--matrixcolor_2);
    border: 1px transparent;
    border-radius: 5px;
    transition: border ease-out 250ms;
}

input:focus, input:hover{
    outline: none;
    border: 2px solid var(--textcolor);
    border-radius: 5px;
    transition: border ease-out 250ms;
}
.container-main-2{
    margin: 50px 50px; 
}
.grid-container{
    display: grid;
    width: 195px;
    grid-template-columns: 65px 65px 65px;
    grid-template-rows: 65px 65px 65px;
    justify-items: center;
    background-color: var(--matrixcolor_2);
    border: 1px transparent;
    border-radius: 5px;
    box-shadow: 0.45rem 0.45rem 1rem 0rem var(--boxshadowcolor2);
}
.grid-container-2x2{
    width: 120px;
    grid-template-columns: 60px 60px;
    grid-template-rows: 60px 60px;
}
.grid-items{
    border: 1px solid var(--matrixcolor_2);
    font-family: 'Montserrat', sans-serif;
    font-weight: bold;
    color: var(--textcolor);
    align-self: center;
    width: 90%;
    height: 90%;
    text-align: center;
}
input::placeholder{
    font-weight: normal;
    color: var(--textcolor);
}
.center{
    display: flex;
    align-items: center;
    justify-content: center;
}
.grid-container:focus-within{
    box-shadow: 1.2rem 1.2rem 2rem 0rem var(--boxshadowcolor2);
    transform: translateY(-10%);
    transition:  all ease-out 0.3s;
}
.grid-container:not(:focus-within){
    box-shadow: 0.45rem 0.45rem 1rem 0rem var(--boxshadowcolor2);
    transform: translateY(0);
    transition: all ease-out 0.3s;
}
.change-3x3{
    font-size: 1rem;
    transition: all 0.3s ease-out;
}
.change-2x2{
    font-size: 1rem;
    transition: all 0.3s ease-out;
}

.none{
    display: none;
}
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type=number]{
    appearance: textfield;
}

.container-select{
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
}
.drop-down {
    height: 2.5em;
    width: 14em;
    border: 3px solid #ff8560;
    border-radius: 10px;
    background-color: #ffffff;
    position: relative;
}
.pos{
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translate(0 ,-52%);
}
.select{
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translate(0, -50%);
    font-family: 'Montserrat', sans-serif;
}
.drop-down:hover{
    cursor: pointer;
}
.drop-down:hover nav{
    visibility: visible;
    transition: visibility 1s linear 200ms;
}
.drop-down:hover ul{
    font-family: 'Montserrat', sans-serif;
    border: 1px transparent;
    border: 3px solid #ff8560;
    border-radius: 10px;
    opacity: 1;
    visibility: visible;
    transition: opacity 500ms linear, visibility 0s linear;
}
.drop-down:hover ul li:hover{
    background-color: #ff916f;
    color: #ffffff;
}


#drop-down-misc-2x2:hover li:first-child, #drop-down-misc-3x3:hover li:first-child{
    border: 1px transparent;
    border-top-left-radius: 7px;
    border-top-right-radius: 7px;
    opacity: 1;
    transition: opacity ease-out 0.2s;
    transition-delay: 0.1s;
}
#drop-down-misc-2x2:hover li:nth-child(2), #drop-down-misc-3x3:hover li:nth-child(2){
    opacity: 1;
    transition: opacity ease-out 0.2s;
    transition-delay: 0.2s;
}
#drop-down-misc-2x2:hover li:nth-child(3), #drop-down-misc-3x3:hover li:nth-child(3){
    opacity: 1;
    transition: opacity ease-out .2s;
    transition-delay: 0.4s;
}
#drop-down-misc-2x2:hover li:nth-child(4), #drop-down-misc-3x3:hover li:nth-child(4){
    opacity: 1;
    transition: opacity ease-out .2s;
    transition-delay: 0.6s;
}
#drop-down-misc-2x2:hover li:nth-child(5), #drop-down-misc-3x3:hover li:nth-child(5){
    opacity: 1;
    transition: opacity ease-out .2s;
    transition-delay: 0.8s;
}
#drop-down-misc-2x2:hover li:last-child, #drop-down-misc-3x3:hover li:last-child{
    border: 1px transparent;
    border-bottom-left-radius: 7px;
    border-bottom-right-radius: 7px;
    opacity: 1;
    transition: opacity ease-out .2s;
    transition-delay: 1s;
}


#drop-down-basic-2x2:hover li:first-child, #drop-down-basic-3x3:hover li:first-child{
    border: 1px transparent;
    border-top-left-radius: 7px;
    border-top-right-radius: 7px;
    opacity: 1;
    transition: opacity ease-out 0.2s;
    transition-delay: 0.1s;
}
#drop-down-basic-2x2:hover li:nth-child(2), #drop-down-basic-3x3:hover li:nth-child(2){
    opacity: 1;
    transition: opacity ease-out 0.2s;
    transition-delay: 0.2s;
}
#drop-down-basic-2x2:hover li:last-child, #drop-down-basic-3x3:hover li:last-child{
    border: 1px transparent;
    border-bottom-left-radius: 7px;
    border-bottom-right-radius: 7px;
    opacity: 1;
    transition: opacity ease-out .2s;
    transition-delay: .4s;
}

#drop-down-basic-matrix-select:hover li:first-child, #drop-down-misc-matrix-select:hover li:first-child{
    border: 1px transparent;
    border-top-left-radius: 7px;
    border-top-right-radius: 7px;
    opacity: 1;
    transition: opacity ease-out 0.2s;
    transition-delay: 0.1s;
}
#drop-down-basic-matrix-select:hover li:last-child, #drop-down-misc-matrix-select:hover li:last-child{
    border: 1px transparent;
    border-bottom-left-radius: 7px;
    border-bottom-right-radius: 7px;
    opacity: 1;
    transition: opacity ease-out 0.2s;
    transition-delay: 0.2s;
}


ul{
    list-style-type: none;
    font-family: 'Montserrat', sans-serif;
    border: 3px solid #ff8560;
    border-radius: 10px;
    width: 14em;
    margin-top: 5px;
    margin-bottom: 1rem;
    background-color: #ffffff;
    visibility: hidden;
    opacity: 0;
    transition: opacity 500ms linear, visibility 0s linear 500ms;
}
li{
    text-decoration: none;
    text-align: center;
    padding: 10px 0px;
    opacity: 0;
    transition: opacity 500ms linear;
}
nav{
    position: absolute;
    top: 110%;
    left: 50%;
    transform: translateX(-50%);
    visibility: hidden;
}

#matrix-3, #matrix-2x2-3, #matrix-2x2-misc-2, #matrix-3x3-misc-2{
    background-color: var(--matrixcolor_2);
}
#matrix-3 div, #matrix-2x2-3 div, #matrix-2x2-misc-2 div, #matrix-3x3-misc-2 div{
    background-color: var(--matrixcolor_2);
    border: 1px transparent;
    border-radius: 5px;
}

@media (max-width: 63.25rem){
    .container-main, .container-main-2, .container-main-misc-2x2, .container-main-misc-3x3{
        display: flex;
        flex-flow: column wrap;
        justify-content: space-between;
        align-items: center;
        width: 50%;
    }
    .container-main{
        height: 56.25rem;
    }
    .container-main-2{
        height: 44.375rem;
    }
    .container-main-misc-3x3{
        height: 41.875rem;
    }
    .container-main-misc-2x2{
        height: 35.625rem;
    }
    .heading-container{
        width: 100vw;
    }
    .heading{
        width: 450px;
    }
    .none{
        display: none;
    }
}

@media (max-width: 43rem){
    .container-main, .container-main-2, .container-main-misc-2x2, .container-main-misc-3x3{
        display: flex;
        flex-flow: column wrap;
        justify-content: space-between;
        align-items: center;
        width: 21.56rem;
    }
    .container-main{
        height: 900px;
    }
    .container-main-2{
        height: 710px;
    }
    .container-main-misc-3x3{
        height: 670px;
    }
    .container-main-misc-2x2{
        height: 570px;
    }
    .heading-for-selection{
        text-align: center;
    }
    .heading-container{
        width: 320px;
    }
    .heading{
        width: 100vw;
    }
    .heading::after{
        position: absolute;
        content: '';
        top: 9%;
        bottom: -5%;
        left: 33%;
        right: 10%;
        background-color: transparent;
        border-bottom: 4px solid #ff754be3;
    }
    .heading::before{
        position: absolute;
        content: '';
        top: 0%;
        bottom: 0%;
        left: 6%;
        right: 71%;
        background-color: transparent;
        border: 4px solid #ff754be3;
        transform: skew(180deg, -20deg);
        z-index: -1;
    }
    .drop-down:hover{
        z-index: 3;
    }

    .none{
        display: none;
    }
}