* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
}

body {
    background-image: url(../image/fondo.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
}

main {
    width: 100%;
    padding: 20px;
    margin: auto;
    margin-top: 110px;
}

.contenedor__todo {
    width: 100%;
    max-width: 800px;
    margin: auto;
    position: relative;
}

.caja_trasera {
    width: 100%;
    padding: 10px 20px;
    display: flex;
    justify-content: center;
    backdrop-filter: blur(5px);
    background-color: rgb(62, 147, 147, 0.5);
    border-radius: 10px;
}

.caja_trasera div{
    margin: 100px 40px;
    color: white;
    transition: all 500ms;
}

.caja_trasera div p,
.caja_trasera div button {
    margin-top:20px;
}

.caja_trasera div h3{
    font-weight: 400;
    font-size: 20px;
}

.caja_trasera button {
    padding: 10px 15px;
    border-radius: 5px;
    border: 0px solid;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 300ms;
}

    .caja_trasera button:hover {
        background: #001121;
        color: aquamarine;
    }

/*FORMULARIOS*/

.contenedor_loginregistro{
    display: flex;
    align-items: center;
    width: 100%;
    max-width: 380px;
    position: relative;
    top: -170px;
    left: 15px;

    transition: left 500ms cubic-bezier(0.175, 0.885, 0.320, 1.275);
}

.contenedor_loginregistro form {
    width: 100%;
    padding: 80px 20px;
    background: white;
    position: absolute;
    border-radius: 20px;
}

    .contenedor_loginregistro form h2 {
        font-size: 30px;
        text-align: center;
        margin-bottom: 20px;
        color: #222323;
    }

.contenedor_loginregistro form input{
    width: 100%;
    margin-top: 20px;
    padding: 10px;
    background: #F2F2F2;
    border: none;
    border-radius: 5px;
    outline: none;
}

.contenedor_loginregistro form button{
    padding: 10px 15px;
    margin-top: 30px;
    border: none;
    font-size: 14px;
    background: #21c0eb;
    color: white;
    cursor: pointer;
    border-radius: 3px;
}

.formulario_login {
    opacity: 1;
    display: block;
}

.formulario_registro {
    display: none; 
}

/*RESPONSIVE DESIGN*/

@media screen and (max-width:850px){
    main{
        margin-top: 50px
    }

    .caja_trasera{
        max-width: 350px;
        height: 300px;
        flex-direction: column;
        margin:auto;
    }

    .caja_trasera div{
        margin: 0px;
        position: absolute;
    }

    .contenedor_loginregistro{
        top: -10px;
        left: -5px;
        margin: auto;
    }

    .contenedor_loginregistro form{
        position: relative;
    }

}