html {
    scroll-behavior: smooth;
    -webkit-scroll-behavior: smooth;
    -moz-scroll-behavior: smooth;
    -ms-scroll-behavior: smooth;
    -o-scroll-behavior: smooth;
}

body {
    margin: 0;
}

a {
    text-decoration: none;
}

li {
    list-style: none;
}

::selection{
    background-color: rgba(93, 235, 220, 0.534);
    color: white;
}

/*********************************/

.internal-display {
    width: 100%;
    background-color: white;
}

#yukari {
    position: fixed;
    background-color: aliceblue;
    color: black;
    padding: 16px;
    bottom: 20px;
    right: 30px;
    transition: 0.4s;
    opacity: 0;
    z-index: 999;
}

#yukari:hover {
    background-color: turquoise;
    color: white;
}

.zemin{
    width: 100%;
    background-color: black;
    float: left;
    margin-top: 30px;
    color: aliceblue;
}

.zemin-1{
    padding: 20px;
}

.zemin-1 a{
    color: aliceblue;
}

.slogan{
    float: left;
    margin-left: 15%;
    padding-top: 30px;
    font-size: 120%;
}

.slogan-alt{
    text-align: center;
    font-size: 20px;
}

@media(max-width:1073px){
    .slogan{
        margin-left: 2%;
    }
}

@media (max-width:917px){
    .slogan{
        font-size: 15px;
    }
}

@media (max-width:633px){
.slogan, .slogan-alt{
    display: none;
}
}

@media (min-width:1770px){
    .slogan{
        font-size:180% ;
    }
    .slogan-alt{
        font-size: 150%;
    }
    }