a {
    text-decoration: none;
    color: inherit;
}
body {
    background-image: url(../img/index_bg.jpeg);
    background-size: cover;
    height: 100dvh;
    overflow: hidden;
}
section {
    width: -webkit-fill-available;
    height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
}
.mainBtnCon {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-gap: 10px;
    width: 800px;
}
.mainBtn {
    background: rgba(255, 255, 255, 0.9);
    text-align: center;
    color: #000;
    
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    transition: all 0.3s cubic-bezier(.25,.8,.25,1);
    width: -webkit-fill-available;
}
.mainBtn:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
}
.mainBtn a{
    display: grid;
    justify-content: center;
    grid-gap: 10px;
    height: 80px;
    width: -webkit-fill-available;
    padding: 20px;

}
.mainBtn img {
    max-width: 150px;
}

@media screen and (max-width:764px) {
    .mainBtnCon {
        grid-template-columns: 1fr;
    }
}