*{box-sizing:border-box;margin:0;padding:0}body{font-family:Arial,Helvetica,sans-serif}header{background:#2c3e50;height:70px;width:100%}.marca{position:relative;text-align:center;top:22px}.marca a{color:#1abc9c;font-weight:bold;font-size:20px;text-decoration:none}.nota{box-sizing:border-box;border-radius:5px;border:1px solid #969696;box-shadow:inset 0 0 1px #272727;padding:10px 5px;margin:auto;margin-top:30px;margin-bottom:30px;max-width:750px;width:100%}.nota p{margin-bottom:20px}footer{color:#fff;background:linear-gradient(124deg,rgba(43,44,64) 0%,#222c40 7%);width:100%;clear:both}.footer-todo:after{background:rgba(173,173,173,.63);content:'';display:block;position:relative;margin:60px auto -20px;height:.5px;width:70%}.footer-todo{width:100%;max-width:1100px;margin:auto;padding:20px 0}.contacto{display:flex;justify-content:space-between}.underline{background:#353b48;border:1px solid rgba(0,0,0,.3);border-radius:3px;box-shadow: 0 0 10px #2187e7b3;position:relative;overflow:hidden;margin-bottom:30px;top:5px;left:0;height:5px;width:100%}.underline span{animation:moving 2s linear infinite;background:#2187e7;border-radius:3px;position:absolute;top:0;left:10px;height:100%;width:15px}@keyframes moving{
    0%{
          left: -20px;
    }
    100%{
          left: 100%;
    }
}.columna2 h3{font-size:22px;margin-bottom:20px}.columna2 ul{list-style:none;box-sizing:border-box}.columna2 li{display:inline-flex}.columna2 ul li a{animation:animacion 2s linear infinite;background:#283d58;box-sizing:border-box;border-radius:50%;display:inline-flex;padding:15px;margin:0 4px;position:relative}.columna3 h3{font-size:22px;text-align:left}.columna3 ul li{list-style:none;padding-bottom:30px}.columna3 ul li a{color:#22c796;text-decoration:none;position:absolute}.columna3 a:hover{color:#a8a7a4}.contenedor-fuder{background:linear-gradient(124deg,rgba(43,44,64) 0%,#222c40 7%);padding:40px}.footer{justify-content:center;text-align:center;align-items:center;display:flex;margin-bottom:20px}.copyright{color:#22c796;margin-right:45px}.information a{color:#22c796;text-decoration:none;margin-right:15px}.information a:hover{color:#a8a7a4}@media (max-width:400px){form{width:92%}.nota{width:92%;font-size:15px}}@media screen and (max-width:640px){.contacto{flex-wrap:wrap}.columna2{height:20vh;width:100%}.columna2,.columna3{margin-top:40px}.contenedor-fuder{padding:20px}.footer-todo{padding:20px}.copyright{margin-right:30px}.information a{display:block;position:relative;margin-bottom:5px;width:150px}.footer-todo:after{margin-bottom:10px}}@keyframes animacion{
    0%{box-shadow: 0 0 0 0 rgba(46, 85, 136, .6), 0 0 0 0 rgba(46, 85, 136, .6);}
    30%{box-shadow: 0 0 0 15px rgba(46, 85, 136, 0), 0 0 0 0 rgba(46, 85, 136, .6);}
    65%{box-shadow: 0 0 0 15px rgba(46, 85, 136, 0), 0 0 0 10px rgba(46, 85, 136, 0);}
    100%{box-shadow: 0 0 0 0 rgba(46, 85, 136, 0), 0 0 0 10px rgba(46, 85, 136, 0);}
}