body{
    padding: 0;
    margin: 0;
}
*{
    margin: 0;
    padding: 0;
}

h1, h2, h3, p{
    margin: 0;
    padding: 0;
}
.cab{
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 10%;
    background-color: #000000B3;
    color: white;
    
}
.cab-content{
    display: flex;
    margin-right: auto;
    margin-left: auto;
    position: relative;
}
.content{
    margin-top: 5%;

}