body {
    background-color: var(--background-color-light);
    color: var(--text-color-light);
}

.contenido {
    margin-left: 30rem;
    margin-right: 20rem;
    animation-duration: 3s;
    animation-name: slidein;
    animation-iteration-count: initial;
}

@keyframes slidein {
    from {
    translate: 150vw 0;
    scale: 200% 1;
}

    to {
    translate: 0 0;
    scale: 100% 1;
}
}

.in {
    width: 350px;
    height: 25px;
    margin-left: 4rem;
}

.caja1 {
    position: static;
    background-size: cover;
    background-position: center;
    margin-top: 1rem;
    margin-left: 14rem;
    width: 30px;
    height: 30px;
    background-color: rgba(0, 34, 255, 0);
}

.caja2 {
    position: static;
    background-size: cover;
    background-position: center;
    margin-top: 1rem;
    margin-left: 12.5rem;
    width: 80px;
    height: 80px;
    background-color: rgba(0, 34, 255, 0);
}

.caja3 {
    position: static;
    background-size: cover;
    background-position: center;
    margin-top: 1rem;
    margin-left: 11.2rem;
    width: 120px;
    height: 120px;
    background-color: rgba(0, 34, 255, 0);
}

:root {
    --background-color-light: #ffffff;
    --text-color-light: #000000;
    --background-color-dark: #121212;
    --text-color-dark: #ffffff;
}

.dark-mode {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

.container-boton{
    background-color: #ffffff00;
    border: 1px solid #6b6b6b;
    position: fixed;
    z-index: 1;
    border-radius: 50%;
    padding: 10px;
    margin-top: 2rem;
    margin-left: 11.5rem;
    transition: ease 0.3s;
    animation: efecto 1.2s infinite;
}

.container-boton:hover{
    transform: scale(1.5);
    transition: 0.3s;
}

.boton{
    width: 85px;
    transition: ease 1s;
}

@keyframes efecto{
    0%{
        box-shadow: 0 0 0 0 rgba(147, 181, 255, 0.85);
    }
    100%{
        box-shadow: 0 0 0 25px rgba(0, 0, 0, 0);
    }
}