* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
    background-image: url(IMG15.jpg);
    background-size: cover;
}

h1 {
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    font-size: 54px;
    background-color: #4CAF50; /* Verde fuerte */
    color: #fff;
    padding-top: 20px;
}

.cont-fond {
    background-color: rgba(0, 0, 0, .6);
    width: 100%;
}

nav {
    max-width: 100%;
    margin: auto;
    background-color: #ffffcc; /* Amarillo claro */
    font-size: 20px;
}

.menu-horizontal {
    list-style: none;
    display: flex;
    justify-content: space-around;
}

.menu-horizontal > li > a {
    display: block;
    padding: 15px 76px;
    color: #2f2f2f;
    text-decoration: none;
}

.menu-horizontal > li a:hover {
    background-color: #4CAF50;
    color: #fff;
}

.menu-vertical {
    position: absolute;
    display: none;
    list-style: none;
    width: 210px;
    background-color: rgba(0, 0, 0, .5);
}

.menu-horizontal li:hover .menu-vertical {
    display: block;
}

.menu-vertical li a:hover {
    background-color: #2e7d32;
    color: #fff;
}

.menu-vertical li a {
    display: block;
    color: #cfcfcf;
    padding: 15px 15px 15px 20px;
    text-decoration: none;
}

section {
    position: relative;
    width: 100%;
    height: 150px;
    background: #3586ff00;
    overflow: hidden;
}

section .air {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url(https://1.bp.blogspot.com/-xQUc-TovqDk/XdxogmMqIRI/AAAAAAAACvI/AizpnE509UMGBcTiLJ58BC6iViPYGYQfQCLcBGAsYHQ/s1600/wave.png);
    background-size: 1000px 100px;
}

section .air.air1 {
    animation: wave 30s linear infinite;
    z-index: 1000;
    opacity: 1;
    animation-delay: 0s;
    bottom: 0;
}

section .air.air2 {
    animation: wave2 15s linear infinite;
    z-index: 999;
    opacity: 0.5;
    animation-delay: -5s;
    bottom: 10px;
}

section .air.air3 {
    animation: wave 30s linear infinite;
    z-index: 998;
    opacity: 0.2;
    animation-delay: -2s;
    bottom: 15px;
}

section .air.air4 {
    animation: wave2 5s linear infinite;
    z-index: 997;
    opacity: 0.7;
    animation-delay: -5s;
    bottom: 20px;
}

@keyframes wave {
    0% { background-position-x: 0px; }
    100% { background-position-x: 1000px; }
}

@keyframes wave2 {
    0% { background-position-x: 0px; }
    100% { background-position-x: -1000px; }
}

.cont-frase {
    width: 50%;
    margin: auto;
    text-align: center;
    height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cont-frase > h2 {
    font-size: 42px;
    color: #fff;
    font-weight: 400;
}

.cont-footer {
    width: 100%;
    background-color: #ffffcc;
    padding: 20px;
    text-align: center;
}

.cont-section {
    width: 80%;
    background-color: #ffffcc;
    margin: auto;
}

.title-section {
    background: #ffeb3b; /* Amarillo */
    width: 80%;
    margin: auto;
    padding: 30px;
    margin-top: 200px;
}

.title-section > h2 {
    font-size: 32px;
    font-weight: 500;
    color: #2e7d32;
}

.cont-level {
    width: 100%;
    display: flex;
}

.level {
    width: 50%;
    font-size: 18px;
    color: #333;
    text-align: justify;
    margin: 30px;
}

.level > h3 {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 10px;
}

.img-hist {
    width: 95%;
    margin: auto;
}

.contenedor {
    background: linear-gradient(
        50deg,
        #2e7d32 30%, 
        rgba(46, 125, 50, 0.4)
    ), url(INFRAESTRUCTURA/IMG28.jpg);
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    padding: 50px;
    width: 1000px;
    border-radius: 10px;
    margin: 20px auto;
}

.contenedor h2 {
    color: #FFFFFF;
    font-size: 36px;
    margin-bottom: 25px;
    font-weight: 400;
}

form {
    display: flex;
    flex-direction: column;
    width: 50%;
}

label {
    font-size: 16px;
    color: #FFFFFF;
    margin-bottom: 10px;
}

input, textarea {
    padding: 10px 14px;
    background-color: #ebebeb;
    border: 0;
    font-size: 16px;
    color: #323233;
    margin-bottom: 20px;
    border-radius: 5px;
}

:focus {
    outline: 2px solid #cddc39; /* Verde lima */
}

.boton1 {
    background-color: #4CAF50;
    width: 150px;
    color: #FFFFFF;
}

.boton1:hover {
    background-color: #388E3C;
}