* {
      box-sizing: border-box;
    }
    body {
        color: #333;
        background-image: url(images/old_paper.jpg);
        background-size: cover;
        background-repeat: no-repeat;
        background-attachment: fixed;
    }
    h1, h2, h3, p {
        font-family: "Montserrat", Arial, sans-serif;
        font-weight: 400;
        text-align: center;
        padding: 0.5em;
        color: #333;
    }
    section {
        width: 100%;
        margin-top: 2em;
        display: flex;
        flex-wrap: nowrap;
        justify-content: space-around;
        align-items: center;
        align-content: flex-start;
    }
    section div {
        display: inline-block;
        padding: 0.5em;
        margin: 0 0.5em;
        width:30%;
        max-width: 320px;
        border: 2px solid #666;
    }
    section div:hover{
        border: 2px solid red;
    }
    section div img {
        max-width: 100%;
        width: 320px;  
     }

    #calc a, #old a, #new a {
        display: block;
        width: 100%;
        height: 100%;
        background-color: rgba(255, 255, 255, 0.8);
        color: rgba(0, 0, 0, 1);
        border: 0;
        text-decoration: none;
    }
    #calc a:hover, #old a:hover, #new a:hover {
        background-color: rgba(255, 255, 255, 0);
        color: rgba(0, 0, 0, 1);
    }
    #calc p, #new p, #old p {
        display: inline-block;
        padding: 0.5em 1em;
        font-size: 0.875em;
        font-weight: 600;
    }
    .search {
        display: none;
    }
    .contacts {
        margin-top: 2em;
        display: flex;
        flex-wrap: nowrap;
        justify-content: space-between;
        align-items:flex-start;
        background-color: #e0e0e0;
    }
    .contacts div {
        width: 20%;
        padding: 1em;
        text-align: center;
    }
    .contacts div a{
        color: inherit;
        text-decoration: none;
        border: 0;
        padding: 0.5em;
    }
    .contacts div a span {
        font-size: 3em;
        color: #000;
    }
    .contacts #te a:hover span{
        color: #229ED9;
    }
    .contacts #dzen a img{
        border: 1px solid transparent;
        border-radius: 50%;
    }
    .contacts #dzen a:hover img{
        border-color: yellow;
        background-color: yellow;
    }
    .contacts #whatsapp a:hover span{
        color: #43d854;
    }
    .contacts #youtube a:hover span{
        color: #cd201f;
    }
    .contacts #mailme a:hover span{
        color: hsla(210, 43%, 33%, 1);
    }
    .contacts div p {
        font-family: "Raleway", Arial; 
        font-size: 0.875em;
        text-align: center;
    }
    .hide {
        font-family: "Montserrat", Arial;
        font-weight: 200;
    }
    @media all and (max-width: 800px) {
    .hide {
        display: none; 
    }
    }
    @media all and (max-width: 480px) {
    section div {
        padding: 0.125em;
        margin: 0 0.25em;
    }
    }