* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: #2c2c2c;
}

a:hover {
    border-bottom: 1px solid #2c2c2c;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 18px;
    color: #2c2c2c;
}

header {
    padding: 20px;
}

.title {
    font-size: 26px;
}

main {
    padding: 20px;
}

.content-title {
    font-size: 22px;
    font-weight: bold;
    border-bottom: 1px solid #2c2c2c;
    padding: 10px 0px;
}

.content-about {
    padding: 10px 0px;
}