@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@100;300;400&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-family:'Roboto', sans-serif;
}
header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 80px;
    /* background: linear-gradient(to top, transparent, ); */
    background-color: #333;

}
header .home{
    font-size: 25px;
    font-weight: 400;
    float: left;

}
header .home a{
    color: white;
    text-decoration: none;
}
header .menu{
    float: right;
    margin-top: .5rem;
}
header ul li{
    display: inline-block;
}
header ul li a{
    text-decoration: none;
    font-size: 16px;
    color: white;
    margin: 0 25px;
    font-weight: 300;
    letter-spacing: 1px;
}
.principal{
    margin: auto;
    max-width: 100%;
    width: 70%;
    padding: 200px 80px;
    color: #333;
    text-align: center;
}
.principal h1{
    font-size: 50px;
}
.principal p{
    padding: 25px 0;
    font-weight: 300;
    font-size: 23px;
}
.wave{
    position: absolute;
    width: 100%;
    bottom: 0;
    opacity: 1;
}