* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background: #000000;
  overflow-x: hidden;
}
::selection{
  background-color: black;
  color: white;
}
a, span{
  color: red;
}
a:visited{
  color: black;
  font-weight: bold;
}

i{
  color: rgb(0, 17, 255);
}

.icon {
  width: 100px;
  height: 100px;
  position: fixed;
  bottom: 20px;
  right: 20px;
  border-radius: 50%;
  box-shadow: rgb(255, 255, 255) 0 0 20px;
  background-image: url(NCS.png);
  background-position: center;
  background-size: cover;
}

.drop {
  margin: 50px auto;
  max-width: 600px;
}

.drop li {
  list-style: none;
  width: 100%;
  margin: 20px;
  padding: 10px;
  border-radius: 8px;
  background: #e3edf7;
  box-shadow: 6px 6px 10px -1px rgba(254, 254, 254, 0.691),
    -6px -6px 10px -1px rgb(255, 255, 255, 0.7);
}

#ul .ulLi{
  
  list-style: disc;
  width: 100%;
  margin-block: 10px;
  padding: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;

}
#ol .olUl{
  
  list-style: decimal;
  width: 100%;
  margin-block: 10px;
  padding: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;

}

.drop li label {
  display: flex;
  align-items: center;
  padding: 10px;
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
}

label::before {
  content: "+";
  margin-right: 10px;
  font-size: 24px;
  font-weight: bolder;
}

input[type="checkbox"] {
  display: none;
}

.drop .content {
  text-align: justify;
  color: #555;
  padding: 0 10px;
  line-height: 26px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s, padding 0.5s;
}

.drop input[type="checkbox"]:checked + label + .content {
  max-height: 400px;
  padding: 10px 10px 20px;
  overflow: auto;
}

.drop input[type="checkbox"]:checked + label::before {
  content: "-";
}


/* animation  */
.shadow-box {
  box-shadow: 0 0 10px red;
  animation: pulseShadow 3s infinite alternate ease-in-out;
}

@keyframes pulseShadow {
  0% {
    box-shadow: -10px -10px 20px red, 10px 10px 20px rgb(255, 0, 0);
  }
  50% {
    box-shadow: 10px -10px 20px rgb(254, 0, 0), -10px 10px 20px rgba(255, 0, 0, 0.988);
  }
  100% {
    box-shadow: -10px -10px 20px red, 10px 10px 20px rgb(255, 0, 0);
  }
}






@media (max-width: 700px) {
  .drop {
    margin: 17px auto;
    max-width: 90%; 
    padding: 0 10px;
  }
  .drop li {
    margin: 10px;
    padding: 5px;
  }
}
@media (max-width: 400px) {
  .drop {
    margin: 8px auto;
    max-width: 90%; 
    padding: 0 5px;
  }
  .drop li {
    margin: 7px;
    padding: 5px;
  }

}