.menu{
  position:relative;
  z-index:4;
}
nav{
  background: rgb(0, 0, 0, 0.4);
  height: 66px;
  width: 100%;
  padding: 0 10% 0 10%;
  position:fixed;
  transition: top 0.3s;
}
.enlace{
  position: absolute;
  padding: 10px 50px;
}
.logo-footer{
  height: 44px;
}
nav ul{
  float: right;
  margin-right: 20px;
}
nav ul li{
  display: inline-block;
  line-height: 60px;
  margin: 0 5px;
}
nav ul li a{
  color: #fff;
  padding: 26px 14px;
  text-transform: uppercase;
}
li a.active, li a:hover{
  /*background: rgb(233, 243, 218, 0.5);*/
  background: rgb(0,255,255,0.5);
  transition: .5s;
}
.checkbtn{
  font-size: 30px;
  color: #fff;
  float: right;
  line-height: 80px;
  padding-right: 40px;
  padding-top:20px;
  cursor: pointer;
  display: none;
}
#check{
  display: none;
}


/*section{
  background: url(images/logos/logo-sicmas-e.png) no-repeat;
  background-size: cover;
  background-position: center center;
  height: calc(100vh - 80px);
}*/

@media (max-width: 952px){
  .enlace{
      padding-left: 20px;
  }
}

@media (max-width: 1280px){
  .checkbtn{
      display: block;
  }
  #menu_head{
    box-sizing: content-box;
  }
  #menu_head ul{
      position: fixed;
      width: 100%;
      height: 100vh;
      background: rgba(0, 0, 0, .8);
      top: 66px;
      left: -100%;
      text-align: center;
      transition: all .5s;
  }
  ::-webkit-scrollbar {
    left: 100%;
}
 nav{
  padding: 0;
}
#menu_head li{
      display: block;
      margin: 20px 0;
      line-height: 30px;
  }
  #menu_head li a{
      font-size: 20px;
  }
  #menu_head  li a:hover, li a.active{
      background: none;
      color: red;
  }
  #check:checked ~ ul{
      left:0;
  }
}