Animazione responsive css

Ciao a tutti, in pratica ho aggiunto un test con un animazione ad una pagina web con dei css (http://test.mondotech.altervista.org/test). Il problema è su mobile... quando una persona clicca il menu copre la scritta. non c'è un modo per evitare ciò?? Inoltre su mobile l'animazione del messaggio si incasina, sapete come posso sistemarlo? Grazie mille a chi mi aiuterà!
CSS:

body {
  width: 100%;
  height: 100%;
  position: fixed;
  background-color: #34495e;
}

.content {
  position: absolute;
  top: 40%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  height: 160px;
  overflow: hidden;
  font-family: 'Lato', sans-serif;
  font-size: 35px;
  line-height: 40px;
  color: #ecf0f1;
}
.content__container {
  font-weight: 600;
  overflow: hidden;
  height: 40px;
  padding: 0 40px;
}
.content__container:before {
  content: '[';
  left: 0;
}
.content__container:after {
  content: ']';
  position: absolute;
  right: 0;
}
.content__container:after, .content__container:before {
  position: absolute;
  top: 0;
  color: #FF8600;
  font-size: 42px;
  line-height: 40px;
  -webkit-animation-name: opacity;
  -webkit-animation-duration: 2s;
  -webkit-animation-iteration-count: infinite;
  animation-name: opacity;
  animation-duration: 2s;
  animation-iteration-count: infinite;
}
.content__container__text {
  display: inline;
  float: left;
  margin: 0;
}
.content__container__list {
  margin-top: 0;
  padding-left: 110px;
  text-align: left;
  list-style: none;
  -webkit-animation-name: change;
  -webkit-animation-duration: 10s;
  -webkit-animation-iteration-count: infinite;
  animation-name: change;
  animation-duration: 10s;
  animation-iteration-count: infinite;
}
.content__container__list__item {
  line-height: 40px;
  margin: 0;
}

@-webkit-keyframes opacity {
  0%, 100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}
@-webkit-keyframes change {
  0%, 12.66%, 100% {
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
  }
  16.66%, 29.32% {
    -webkit-transform: translate3d(0, -25%, 0);
            transform: translate3d(0, -25%, 0);
  }
  33.32%,45.98% {
    -webkit-transform: translate3d(0, -50%, 0);
            transform: translate3d(0, -50%, 0);
  }
  49.98%,62.64% {
    -webkit-transform: translate3d(0, -75%, 0);
            transform: translate3d(0, -75%, 0);
  }
  66.64%,79.3% {
    -webkit-transform: translate3d(0, -50%, 0);
            transform: translate3d(0, -50%, 0);
  }
  83.3%,95.96% {
    -webkit-transform: translate3d(0, -25%, 0);
            transform: translate3d(0, -25%, 0);
  }
}
@keyframes opacity {
  0%, 100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}
@keyframes change {
  0%, 12.66%, 100% {
    -webkit-transform: translate3d(0, 0, 0);
            transform: translate3d(0, 0, 0);
  }
  16.66%, 29.32% {
    -webkit-transform: translate3d(0, -25%, 0);
            transform: translate3d(0, -25%, 0);
  }
  33.32%,45.98% {
    -webkit-transform: translate3d(0, -50%, 0);
            transform: translate3d(0, -50%, 0);
  }
  49.98%,62.64% {
    -webkit-transform: translate3d(0, -75%, 0);
            transform: translate3d(0, -75%, 0);
  }
  66.64%,79.3% {
    -webkit-transform: translate3d(0, -50%, 0);
            transform: translate3d(0, -50%, 0);
  }
  83.3%,95.96% {
    -webkit-transform: translate3d(0, -25%, 0);
            transform: translate3d(0, -25%, 0);
  }
}

HTM TESTOL:

<div class="content">
  <div class="content__container">
    <p class="content__container__text">
      Ciao
    </p>
    
    <ul class="content__container__list">
      <li class="content__container__list__item">mondo !</li>
      <li class="content__container__list__item">bob !</li>
      <li class="content__container__list__item">utente !</li>
      <li class="content__container__list__item">everybody !</li>
    </ul>
  </div>
</div>

[chack1172]

Ciao ti basta aggiungere tramite css lo z-index alla navbar. "z-index: 1" è sufficente per risolvere il problema.