body {
    background: linear-gradient(180deg,#f0f0f0 20%,#d7d6d6 90%);
    height: 100%;
}
main {
    background-color: #fff;
    margin: 30px auto;
}
#main-cont {
    width: 95%;
    height: 80%;
    margin: auto;
}
.respo {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    max-height: 90vh;
    pointer-events: none;
}
@media (max-width:650px) {
    main {width: 100%; min-width: 0;}
    #main-cont {width: auto; margin: 0 20px;}
    #main-cont h1{text-align: center;}
    h4 {font-size: 0.8rem}
} 

h4 {
    font-family: var(--font-main), sans-serif;
    font-weight: 400;
    font-size: 1.1rem;
    text-decoration: none;
    color: #000;
}