p {
    margin: 0;
    padding: 0;
}
ul{
    margin: 0;
    padding: 0;
}
li{
    list-style-type: none;
}

img{
    vertical-align: bottom;
    width: 100%;
}

button{
    border: none;
    outline: none;
}

.site_explanation p{
    color: #333;
    font-size: clamp(17.523364485981308px,4.67vw, 20px);
}
.sns_link{
    position: fixed;
    bottom: 0;
    right: 0;
    z-index: 1000;
}
.sns_link a{
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.sns_link a:nth-child(1){
    background: #1d9bf0;
}
.sns_link a:nth-child(2){
    background: -webkit-linear-gradient(135deg, #427eff 0%, #f13f79 70%) no-repeat;
    background: linear-gradient(135deg, #427eff 0%, #f13f79 70%) no-repeat;/*グラデーション①*/
}
.sns_link a:nth-child(3){
    background: #02c854;
}
@media (max-width:768px) {
    .sns_link{
        display:flex;
        width: 100%;
    }
    .sns_link a{
        width: 100%;
        height: 50px;
    }
    footer{
        padding-bottom: 50px;
    }
}