style.css

@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap');

body {
    font-family: 'Roboto Mono', monospace;
    margin: 0;
}

.hero-bg {
    text-align: center;
    background-color: #1a0045;
    color: white;
    height: 100vh;
    padding-bottom: 1em;
    position: relative;
}

.hero-text {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%)
}

.hero-text h1 {
    font-size: 5em;
    font-weight: bold;
}

.hero-text img {
    padding: 1em;
}

.hero-text p {
    font-weight: bold;
    margin: 0 1em 3em;
    font-size: 2.5em;
}

section h1 {
    position: relative;
    display: block;
    z-index: 1;
    font-size: 40px;
}

section h1 span::before {
    content: '';
    position: absolute;
    width: 1.9em;
    background: cornflowerblue;
    height: .4em;
    bottom: 0;
    z-index: -1;
    margin-left: -.3em;
}

input[type=button] {
    background-color: #F89104;
    font-family: 'Roboto Mono', monospace;
    border: none;
    width: 30%;
    color: white;
    font-weight: bold;
    padding: 1em 0;
    border-radius: .2em;
    font-size: 1.1em;
    cursor: pointer;
}