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

body {
    transition: 1s;
}

.main {
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.conter {
    width: 20rem;
    height: 4rem;
    background-color: white;
    font-size: 20px;

}

button {
    width: 100%;
    background-color: black;
    color: white;
    border-radius: 4px;
    display: block;
    font-size: 20px;
}

#color1 {
    font-size: 30px;
}