body {
    background: linear-gradient(180deg,#fbfbfb 20%,#d7d6d6 90%);
}
main {
    background-color: #fff;
    width: 70%;
    min-width: 700px;
    max-width: 1000px;
    margin: 30px auto;
    min-height: calc(100vh - 190px)
}
#main-cont {
    width: 90%;
    height: 80%;
    margin: auto;
}
#main-cont ul { 
    list-style: none;
    text-align: left;
    margin-left: 25px;
}

::marker {
    content: "\25b7";
    font-size: 1.2rem;
    color: var(--gradient-2);
}

li:hover::marker {content: "\25b6"}

@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}

    #main-cont > img{
        max-width: 90vw;
        height: auto;
    }
}
span{
    background-color: #2a2a2a;
    color: transparent;
    padding: 0 4px;
}
span:active{
    background-color: #efefef;
    color: inherit;
}
.respo {
    display: block;
    margin: 0 auto;
    max-width: min(90vw,90%);
    height: auto;
    max-height: 75vh;
    padding-bottom: 1.5rem;
    pointer-events: none;
}

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

video {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}