body{
    display: flex;
    flex-wrap: wrap;

    width: 100%;
    height: 100vh;
    background: url(../../img/books-2596809.jpg);
    background-position: center, center;
    background-size: cover;
    background-repeat: no-repeat;
    overflow: hidden;
}
.tests {
    position: absolute;
    top: 50px;
    left: 0;
    z-index: 10;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    width: 300px;
    height: calc(100vh - 50px);
    background: var(--backgroundColor);
    transform: translateX(-100%);
    transition: all 0.5s cubic-bezier(0.55, 0.055, 0.675, 0.19);
}
.tests.visible {
    transform: translateX(0%);
}
.tests h2 {
    padding: 1rem 0;
}
.contenedor{
    max-width: 90%;
}
.test__title {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto 1.5rem auto;
    padding: 0 15px;
    font-size: 5vh;
    font-weight: 600;
    text-decoration: underline;
}
.question__test {
    font-size: 3.5vh;
    margin-bottom: 1rem;
}
.box__resps {
    font-size: 3vh;
    padding: 0 15px;
    margin-bottom: 1.5rem;
}
.letter {
    margin: 0 15px;
}
.form {
    position: relative;
    width: 100%;
    max-width: none;
    max-height: calc(100vh - 150px);
    overflow-x: hidden;
}
.cont__inner {
    cursor: pointer;
}
input[type="submit"] {
    display: none;
}
#cont__btn__test {
    position: absolute;
    right: 10px;
    bottom: 10px;

    width: 50px;
    height: 50px;
}
@media (min-width:720px) {
    .tests {
        position: static;
        transform: translateX(0);
    }
    .contenedor {
        max-width: calc(90% - 300px);
    }
    #cont__btn__test {
        display: none;
    }
}