html, body {
    height: 100%;
    min-height: 100%;
    margin: 0;
}

body {
    font-family: 'Roboto', sans-serif;
    background-image: url('../img/sections/blue.png');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-color: #4c8cc3;
    color: #fff;
}

#header-logo::after {
    position: absolute;
}

h1, h2, h3, h4, p {
    margin: 0;
    padding-bottom: 10px;
    font-weight: 100;
}

a {
    color: #fff;
}

    a,
    a:visited,
    a:hover,
    a:focus {
        text-decoration: none;
    }

.section {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.mt-5 { margin-top: 5px !important; }
.mt-10 { margin-top: 10px !important; }
.mt-15 { margin-top: 15px !important; }
.mt-20 { margin-top: 20px !important; }
.mt-25 { margin-top: 25px !important; }
.mt-30 { margin-top: 30px !important; }
.mt-40 { margin-top: 40px !important; }

.mb-5 { margin-bottom: 5px !important; }
.mb-10 { margin-bottom: 10px !important; }
.mb-15 { margin-bottom: 15px !important; }
.mb-20 { margin-bottom: 20px !important; }
.mb-25 { margin-bottom: 25px !important; }
.mb-30 { margin-bottom: 30px !important; }
.mb-40 { margin-bottom: 40px !important; }

.ml-5 { margin-left: 5px !important; }
.ml-10 { margin-left: 10px !important; }
.ml-15 { margin-left: 15px !important; }
.ml-20 { margin-left: 20px !important; }
.ml-25 { margin-left: 25px !important; }
.ml-30 { margin-left: 30px !important; }
.ml-40 { margin-left: 40px !important; }

.mr-5 { margin-right: 5px !important; }
.mr-10 { margin-right: 10px !important; }
.mr-15 { margin-right: 15px !important; }
.mr-20 { margin-right: 20px !important; }
.mr-25 { margin-right: 25px !important; }
.mr-30 { margin-right: 30px !important; }
.mr-40 { margin-right: 40px !important; }

.p-5 { padding: 5px !important; }
.p-10 { padding: 10px !important; }
.p-15 { padding: 15px !important; }
.p-20 { padding: 20px !important; }
.p-25 { padding: 25px !important; }
.p-30 { padding: 30px !important; }
.p-40 { padding: 40px !important; }

.pt-5 { padding-top: 5px !important; }
.pt-10 { padding-top: 10px !important; }
.pt-15 { padding-top: 15px !important; }
.pt-20 { padding-top: 20px !important; }
.pt-25 { padding-top: 25px !important; }
.pt-30 { padding-top: 30px !important; }
.pt-40 { padding-top: 40px !important; }

.pb-5 { padding-bottom: 5px !important; }
.pb-10 { padding-bottom: 10px !important; }
.pb-15 { padding-bottom: 15px !important; }
.pb-20 { padding-bottom: 20px !important; }
.pb-25 { padding-bottom: 25px !important; }
.pb-30 { padding-bottom: 30px !important; }
.pb-40 { padding-bottom: 40px !important; }