body {
    margin-top: 15px;
    background-image: url('../img/back.jpg');
    background-position: center;
    background-attachment: fixed;
    background-size: cover;
}
.main {
    background: rgba(255, 255, 255, 0.85);
    border-radius: 3px;
    padding: 0 10px;
}
h1 {
    color: deepskyblue;
    font-size: 3rem;
    margin: 10px 0 0;
    letter-spacing: -4px;
}
h2 {
    color: limegreen;
    margin-bottom: 20px;
}
.em {
    font-weight: bold;
    font-size: 1.4rem;
    margin: 0;
}
em {
    font-style: normal;
}
.counter-wrapper {
    margin: 20px 0;
}
.counter {
    display: flex;
    justify-content: center;
    color: white;
    font-family: "Consolas", "Menlo";
    font-weight: bold;
    margin: 0;
}
.counter-item {
    font-size: 1.5rem;
    background-image: linear-gradient(#060606,#5c5c5c,#060606);
    margin: 0 1px;
    padding: 0px 4px;
    border-radius: 5px;
}
.counter-item:nth-last-child(3n) {
    margin-left: 10px;
}
.underlined {
    border-bottom: 2px dashed black;
    padding-bottom: 2px;
}

@media screen and (min-width: 576px) {
    .counter-item {
        font-size: 3rem;
        margin: 0 3px;
        padding: 0px 7px;
        border-radius: 6px;
        line-height: 3.8rem;
    }
}

@media screen and (min-width: 768px) {
    body {
        margin-top: 50px;
    }
    .counter-item {
        font-size: 4rem;
        padding: 7px 7px;
        border-radius: 8px;
    }
    h1 {
        font-size: 4rem;
    }
    .counter-item:nth-last-child(3n) {
        margin-left: 20px;
    }
}

@media screen and (min-width: 992px) {
    .counter-item {
        font-size: 5.3rem;
        padding: 17px 10px;
        border-radius: 8px;
        text-shadow: 0 0 3px black;
    }
    .counter-item:nth-last-child(3n) {
        margin-left: 30px;
    }
}

@media screen and (min-width: 1200px) {
    body {
        margin-top: 60px;
    }
    .counter-item {
        font-size: 6rem;
        padding: 26px 15px;
        border-radius: 10px;
    }
    .counter-item:nth-last-child(3n) {
        margin-left: 40px;
    }
}

@media screen and (min-width: 1400px) {
    body {
        margin-top: 100px;
    }
    h1 {
        font-size: 6rem;
    }
    .counter-item:nth-last-child(3n) {
        margin-left: 50px;
    }
}