.burger {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 30px;
  background: none;
  border: none;
  outline: none;
  z-index: 10;
}
.burger span {
  position: relative;
  height: 2px;
  width: 100%;
  background: #3acfbb;
  display: inline-block;
  border-radius: 4px;
  transition: all .3s ease;
}
.burger span:before {
  content: "";
  height: 2px;
  width: 100%;
  background: #3acfbb;
  position: absolute;
  top: -8px;
  right: 0;
  border-radius: 4px;
  transition: all .3s ease-in-out;
}
.burger span:after {
  content: "";
  height: 2px;
  width: 70%;
  background: #3acfbb;
  position: absolute;
  bottom: -8px;
  right: 0;
  border-radius: 4px;
  transition: all .3s ease-in-out;
}
.burger.open span {
  background: white;
}
.burger.open span:before {
  opacity: 1;
  -webkit-transform: rotate(40deg);
          transform: rotate(40deg);
  width: 57%;
  top: -6px;
  background: white;
}
.burger.open span:after {
  opacity: 1;
  -webkit-transform: rotate(-40deg);
          transform: rotate(-40deg);
  width: 57%;
  bottom: -6px;
  background: white;
}

.sidemenu {
  background: rgba(0, 12, 43, 1);
  background-image: url(https://www.rionegro.com.ar/wp-content/uploads/2020/07/canal-grande-fondo-menu-3.jpg);
background-size: cover;
  position: fixed;
  right: 0;
  top: 0;
  width: 100%;
  height: 100%;
  -webkit-transform: translateX(100%);
          transform: translateX(100%);
  transition: all 0.5s ease;
  padding: 80px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidemenu.open {
  -webkit-transform: translateX(0);
          transform: translateX(0);
}

.sidemenu.open ul{
padding-left: 0px;
}

.sidemenu.open ul li{
  list-style-type: none;
  cursor: pointer;
  margin: 15px;
}
.sidemenu.open ul li a{
  color: #999;
  font-family: 'PT Serif', serif;
  list-style-type: none;
  font-size: 2.3em;
  margin: 15px 10px;
  cursor: pointer;
  transition: all .3s ease;
  
}

.sidemenu.open ul li a:hover,
.sidemenu.open ul li a.active
{
  font-family: 'PT Serif', serif; 
  color: #fff;
  font-size: 2.3em;
  border-bottom:3px solid #3acfbb;
  text-decoration: none

}



.sidemenu.open ul li:nth-child(1) {
  -webkit-animation: slideIn 0.6s  ease;
  animation: slideIn 0.6s ease;
}
.sidemenu.open ul li:nth-child(2) {
  -webkit-animation: slideIn 0.65s ease;
  animation: slideIn 0.65s ease;
}
.sidemenu.open ul li:nth-child(3) {
  -webkit-animation: slideIn 0.70s ease;
  animation: slideIn 0.70s ease;
}
.sidemenu.open ul li:nth-child(4) {
  -webkit-animation: slideIn 0.75s ease;
  animation: slideIn 0.75s ease;
}



@-webkit-keyframes slideIn {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-80px);
            transform: translateX(-80px);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0px);
            transform: translateX(0px);
  }
}

@keyframes slideIn {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-80px);
            transform: translateX(-80px);
  }
  100% {
    opacity: 1;
    -webkit-transform: translateX(0px);
            transform: translateX(0px);
  }
}








.tabs { 
  width: 100%; 
  padding: 0px; 
  margin: 50px;
  position: relative; 
  font-family: 'PT Serif', serif;
} 


section.content-tab { 
  display: none;  
  padding: 15px; 

  position: absolute; 
  top: 0; 
  left: 180px; 
} 
p { 
  margin: 0; 
} 
.sidemenu input { 
  display: none; 
} 
.sidemenu label { 
  display: block; 
  width: 180px; 
  padding: 15px; 
  cursor: pointer; 
  font-size: 26px;
  color: #3acfbb;
} 
.sidemenu input#tab1 + label { 
  color: white; 
  font-size: 30px;
  border-bottom:3px solid #3acfbb;
} 

.sidemenu input#tab2 + label { 
  color: white; 
  font-size: 20px;
  border-top: 1px solid #666;
  margin-top: 50px;
} 

.sidemenu #tab1:checked ~ #content1, .sidemenu #tab2:checked ~ #content2,.sidemenu #tab3:checked ~ #content3,.sidemenu #tab4:checked ~ #content4 { 
  display: block; 
} 
section.content-tab{ 
  animation: scale 0.7s ease-in-out; 
} 


@keyframes scale { 
  0% { 
  transform: scale(0.9); 
  opacity: 0; 
  } 
  50% { 
  transform: scale(1.005); 
  opacity: 0.5; 
  } 
  100% { 
  transform: scale(1); 
  opacity: 1; 
  } 
}

.content-tab{
  color: #fff;
}
.content-tab.creditos{
  color: #999;
  font-family: 'Fira Sans', sans-serif;
}
section.content-tab.creditos p b{
  padding: 15px 7px;
}


@media (max-width: 768px) {
    .tabs { 
      margin: 50px 20px;
    }
    section.content-tab {
      position: relative;
      left: 0px;
    }
}