html,
body {
    width: 100%;
    height: 100%;
    background-color: #363636;
    margin: 0;
    overflow: hidden;
    font-size: 7px;
    position: relative;
}

::-webkit-scrollbar {
    height: 0.5rem;
    padding: 0.2rem;
}

::-webkit-scrollbar-track {
    background: #808080;
    border-radius: 3rem;
    padding: 0.2rem;
    box-shadow: inset 0 0 0.5rem rgba(0, 0, 0, 0.4);
}

::-webkit-scrollbar-thumb {
    background: #363636;
    outline: 1px solid #505050;
    border-radius: 3rem;
}

::-webkit-scrollbar-thumb:hover {
    background: #282828;
}

header {
    height: 3%;
    background-color: #282828;
    text-align: center;
    vertical-align: middle;
    padding: 1.5rem;
    box-shadow: 0rem 0.2rem 0.6rem 0 #282828;
}

#title-cont {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

#title-cont h2 {
    width: 38%;
    margin: 0;
    font-size: 2.5rem;
    color: #3d6d79;
    text-shadow: 0.1rem 0.2rem 0.7rem #101010;
}


/*main*/

main {
    width: 100%;
    height: 100%;
    position: relative;
    text-align: center;
}

#main-cont {
    width: 26rem;
    height: auto;
    background-color: #282828;
    padding: 1rem;
    position: absolute;
    top: 38%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%);
    box-shadow: 0rem 0.5rem 0.6rem 0 black;
}

#calc-cont {
    width: 100%;
    position: relative;
    height: 100%;
}

#output {
    width: 100%;
    height: 6rem;
    background-color: #505050;
    box-shadow: 0.1rem 0.1rem 0.6rem 0 black inset;
    margin-bottom: 0.8rem;
}

#output-text {
    font-size: 5rem;
    height: 5.5rem;
    text-align: end;
    margin: 1rem;
    color: #bbbbbb;
    overflow-x: auto;
    overflow-y: hidden;
}

#table-cont {
    position: relative;
    height: auto;
    width: 100%;
}

table,
th,
td {
    border-radius: 1rem;
}

table {
    width: 100%;
    text-align: center;
    height: auto;
    margin: 0;
    font-family: "Supermercado One";
    border-spacing: 1rem;
    column-width: 3rem;
}

.key:hover {
    background-color: #808080;
}

.operator:hover {
    background-color: #2d5d69;
}

.btns {
    background-color: #3d6d79;
    color: white;
    font-size: 3.5rem;
}

.btns:hover {
    background-color: #2d5d69;
}

#equals {
    background-color: black;
    color: white;
}

#equals:hover {
    background-color: #101010;
}

td {
    font-size: 3.5rem;
    color: black;
    background-color: #969696;
    box-shadow: 0rem 0.2rem 0.4rem 0 black;
    padding: 0;
    white-space: nowrap;
}

td img {
    height: auto;
    width: 2rem;
    display: block;
    padding: 0;
    margin: 0 auto;
}

.operator {
    background-color: #3d6d79;
    color: white;
    font-size: 3.5rem;
}


/*footer*/

footer {
    width: 100%;
    height: 2%;
    background-color: #282828;
    position: absolute;
    bottom: 0;
    padding: 20px 0;
    text-align: center;
    box-shadow: 0rem -0.2rem 0.6rem 0 #282828;
}

footer h4 {
    width: 100%;
    font-size: 1.2rem;
    color: #bb9696;
    margin: 10px auto;
    position: absolute;
    bottom: 3rem;
}

footer h5 {
    font-size: 0.8rem;
    width: 100%;
    color: #969696;
    margin: 12px 0 8px 0;
    position: absolute;
    bottom: 0;
}

footer a {
    text-decoration: none;
    font-style: italic;
    color: #bbbbbb;
}

@media screen and (max-height:350px) {
    html,
    body {
        font-size: 5px;
    }
    header {
        height: 4%;
        padding: 0.5rem;
    }
    #title-cont img {
        width: 2rem;
    }
    #title-cont h2 {
        width: 32%;
    }
    #main-cont {
        top: 40%;
    }
    footer {
        height: 1%;
    }
}

@media screen and (min-height: 450px) {
    html,
    body {
        font-size: 8px;
    }
    header {
        height: 4%;
        padding: 0.5rem;
    }
    #title-cont img {
        width: 1.5rem;
    }
    #main-cont {
        top: 41%;
    }
    footer {
        height: 2%;
    }
    #title-cont h2 {
        width: 35%;
    }
}

@media screen and (min-height: 650px) {
    html,
    body {
        font-size: 10px;
    }
    header {
        height: 5%;
    }
    #title-cont h2 {
        width: 28%;
    }
    footer {
        height: 4%;
    }
    #main-cont {
        width: 28rem;
    }
}

@media screen and (min-height: 850px) {
    html,
    body {
        font-size: 12px;
    }
    footer {
        height: 4%;
    }
}