*{
    padding: 0;
    margin: 0;
    font-family: sans-serif;
    box-sizing: border-box;
}
body{
    background: hsl(30, 38%, 92%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
div.principal{
    border-radius: 10px;
    overflow: hidden;
}
.principal{
    margin: auto;
    height: auto;
    width: 550px;
    display: flex;
}

.secao{
    text-align: left;
    width: 50%;
    background: hsl(0, 0%, 100%);
}
.preview{
    font-size: 12px;
    margin: 24px;
    letter-spacing: 3px;
}
.texto1{
    font-size: 12px;
    margin: 24px;
    letter-spacing: 2px;
}
h1{
    padding: 0 24px;
    margin-bottom: 20px;
    font-size: 30px;
}
.preco1{
    margin: 24px;
    font-size: 30px;
    color: hsl(158, 36%, 37%);
}
.preco2{
    text-decoration: line-through;
}
p, .preco2{
    color: #555;
}
button{
    text-align: center;
    color: #fff;
    background: hsl(158, 36%, 37%);
    margin: 24px;
    padding: 15px 70px;
    border: none;
    border-radius: 10px;
}
button:hover{
    background: #266449;
}

/*Mobile*/
@media(max-width: 700px){
    section{
        margin: 30px 20px;
    }
    div.principal{
        width: 100%;
        flex-direction: column;
        transform: none;
        margin: auto;
        height: auto;
    }
    .secao{
        align-items: center;
        width: 100%;
        flex-direction: column;
    }
    button{
        display: block;
        margin: 24px auto;
        width: 85%;
    };
}