body {
    color: white; 
    background: black; 
    margin: 0px;
    font-family: "chakra petch", sans-serif;
    margin-bottom: 100px;
}


header {
     border-bottom: solid 2px rgb(42,
      122, 228 );
     padding: 20px;
     font-size: 32px;
     color: rgb(42, 122, 228 );
}
.chamada {
    background 
    rgb (184, 156, 213);
    padding-bottom: 80px;
    padding-top: 80px;
    display: flex;
    justify-content: center;
}
.chamada-texto {
    margin-right: 5%;
}
h1  {
    font-size: 40px;
}

p {
    font-size: 20px;
}
 
.categoria-videos {
    display: flex;
    overflow-x: auto;
    gap: 10px;
}
.categoria {
    padding-left: 20px;
    padding-right: 20px;
}
.categoria-videos img {
    opacity: 0,5;
    height: 200px;
}
.categoria-videos img:hover {
    opacity: 1,0;
    border: 3px solid green;
}
.categoria h2 {
    color: rgb (42, 122, 228);
}