이온디닷컴

body {

font-family: Arial, sans-serif;

margin: 0;

padding: 0;

}

.navbar {

background-color: #333;

color: white;

padding: 15px;

text-align: center;

}

.navbar a {

color: white;

margin: 0 15px;

text-decoration: none;

}

.banner {

background-color: #f4f4f4;

padding: 50px;

text-align: center;

}

.banner h1 {

margin: 0;

font-size: 2em;

}

.columns {

display: flex;

justify-content: space-around;

padding: 20px;

}

.column {

background-color: #eaeaea;

padding: 20px;

text-align: center;

width: 30%;

}

.footer {

background-color: #333;

color: white;

padding: 20px;

text-align: center;

}