livros.css

body
{
    background: linear-gradient(to left, #628dbd, #00ff88, #00b15e, green);
    background-size: 500% 100%;
   animation: degrade-animado 5s infinite alternate-reverse;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    min-height: 100vh;
}

.container
{
    display: grid;
    grid-template-columns: repeat(4, 2fr);
    max-width: 90%;
    margin: 0 auto;
	grid-gap: 25px;
	padding: 40px 10px;
}
.container .box{
    background: #03214e;
    padding: 15px;
    display: grid;
    font-size: 12pt;justify-content: center;
    place-items: center;
    text-align: center;
    color: #fff;
    transition: 0.5s;
}
.container .box:hover
{
background: #45f353;
text-transform: uppercase;
text-decoration: black;
}
.container .box img
{
    width: 70%;
    position: relative;
    max-width: 100%;
    margin-bottom: 10px;
}

.titlesbook{
    font-size: 20pt;justify-content: center;
    color: rgb(70, 209, 252);
}

.voltar{
    width: 70px;
    height: 41px;
    background: #00ff2a;
    border-radius: 5px;
    margin-top: 15px;
    color: white;
    cursor: pointer;
    font-size: 16px;
}



@media (max-width:930px) {
    .img-box{
        display: none;
    }
    .box{
        width: 700px;
    }
    .form-box{
        width: 100%;
        border-radius: 20px;
    }
}
@media (max-width:500px) {
    .w50{
        width: 100%;
        padding: 0;
    }
}
@keyframes degrade-animado {
    0% {
    background-position-x: 0%;
    }
    
    100% {
        background-position-x: 100%;
    }
  }