:root {
    --primary-color: white;
    --secondary-color: #ff0000;
    --tertiary-color: #001845;
    --quaternary-color: #33415c;
    font-family: sans-serif;
}

body,html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
}

footer {
    margin-bottom: 20px;
    text-align: center;
    padding: 15px;
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

footer h6 {
    margin-top: 0px;
    padding: 10px;
}

footer span {
    color: var(--tertiary-color);
}

.section-top {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    background-image: url(../img/image1.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    text-align: center;
    justify-content: center;
    animation: change 10s infinite ease-in-out;
}

.content {
    position:absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-transform: uppercase;
}

.content a {
    background-color: #001845;
    padding: 10px 20px;
    text-decoration: none;
    font-size: 18px;
    border-radius: 20px;
    color: var(--primary-color);
    margin-left: 30px;
    margin-bottom: 5px;
    text-align: center;
    width: 300px;
}

.btn-main {
background-color: var(--tertiary-color);
color: var(--primary-color);
}

.content h1 {
    font-size: 90px;
    letter-spacing: 15px;
    color: var(--primary-color);
}

.content h1 span{
    color: var(--secondary-color);
}

.content a:hover {
    background-color: #0353A4;
    color: var(--primary-color);
}

@keyframes change{
    0%
    {
        background-image: url(../img/image9.jpg);
    }
    to {}
    20%
    {
        background-image: url(../img/image3.jpg);
    }
    to {}
    40%
    {
        background-image: url(../img/image4.jpg);
    }
    to {}
    60%
    {
        background-image: url(../img/image5.jpg);
    }
    to {}
    80%
    {
        background-image: url(../img/image6.jpg);
    }
    to {}
    100%
    {
        background-image: url(../img/image7.jpg);
    }
}