styles.css

* {box-sizing:border-box}

/* Slideshow container */
.slideshow-container {
  max-width: 1000px;
  position: relative;
  margin: auto;
}

/* Hide the images by default */
.mySlides {
    display: none;
}

/* Next & previous buttons */
.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 18px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
}

/* Position the "next button" to the right */
.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}

/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
  background-color: rgba(0,0,0,0.8);
}

/* Caption text */
.text {
  color: #f2f2f2;
  font-size: 15px;
  padding: 8px 12px;
  position: absolute;
  bottom: 8px;
  width: 100%;
  text-align: center;
}

/* Number text (1/3 etc) */
.numbertext {
  color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
}

/* The dots/bullets/indicators */
.dot {
  cursor: pointer;
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}

.active, .dot:hover {
  background-color: #717171;
}

/* Fading animation */
.fade {
  -webkit-animation-name: fade;
  -webkit-animation-duration: 1.5s;
  animation-name: fade;
  animation-duration: 1.5s;
}

@-webkit-keyframes fade {
  from {opacity: .4} 
  to {opacity: 1}
}

@keyframes fade {
  from {opacity: .4} 
  to {opacity: 1}
}

/* Dropdown Button */
.dropbtn {
    background:#E91E63;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
}

/* The container <div> - needed to position the dropdown content */
.dropdown {
    position: relative;
    display: inline-block;
}

/* Dropdown Content (Hidden by Default) */
.dropdown-content {
    display: none;
    position: absolute;
    background-color:#E91E63;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}

/* Links inside the dropdown */
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

/* Change color of dropdown links on hover */
.dropdown-content a:hover {background-color :#FBC02D;}

/* Show the dropdown menu on hover */
.dropdown:hover .dropdown-content {display: block;}

/* Change the background color of the dropdown button when the dropdown content is shown */
.dropdown:hover .dropbtn {background-color :#FBC02D;}


a:link {
  color: white;
  background-color: transparent;
  text-decoration: none;
   transition: all ease 0.5s;

}
a:visited {
  color: white;
  background-color: transparent;
  text-decoration: none;
}
a:hover {
  color: white;
  background-color: transparent;
  text-decoration: underline;
  transition: all ease 0.5s;

}
a:active {
  color: yellow;
  background-color: transparent;
  text-decoration: underline;
}


#nav {
  margin:0px;
  width:100%;
}

ul#navigation {
  width:100%;
  margin:0px;
  float:left;
  position: absolute;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  
}

ul#navigation li {
  display:inline;
  font-size:20px;
  font-weight:bold;
  margin:0;
  padding:0;
  position:relative;
 /* border-top:;
  border-bottom:2px solid green;*/
}

ul#navigation li a {
  padding:10px 25px;
  color:black;
  text-decoration:none;
  display:inline-block;
  width:150px;
  background: transparent;

  
}

ul#navigation li#op1 a:hover {
  background:#E91E63;
  color:#ffffff;
  position: absolute;
  z-index: 10;
}
ul#navigation li#op2 a:hover {
  background:#FBC02D;
  color:#ffffff;
}
ul#navigation li#op3 a:hover {
  background:#039BE5;
  color:#ffffff;
}
ul#navigation li#op4 a:hover {
  background:#F06292;
  color:#ffffff;
}
ul#navigation li#op5 a:hover {
  background:#EF6C00;
  color:#ffffff;
}
ul#navigation li#op6 a:hover {
  background:#F44336;
  color:#ffffff;
}
ul#navigation li#op7 a:hover {
  background:#1565C0;
  color:#ffffff;
}


/*for navigation menu*/


ul#navigation li#op1:hover > a {
  background:#E91E63;
}
ul#navigation li#op2:hover > a {
  background:#FBC02D;
}
ul#navigation li#op3:hover > a {
  background:#039BE5;
}
ul#navigation li#op4:hover > a {
  background:#F06292;
}
ul#navigation li#op5:hover > a {
  background:#EF6C00;
}
ul#navigation li#op6:hover > a {
  background:#F44336;
}
ul#navigation li#op7:hover > a {
  background:#1565C0;
}


/* Drop-Down Navigation */
ul#navigation li:hover > ul
{

  visibility:visible;
  opacity:1;
}

ul#navigation ul, ul#navigation ul#op1 li ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#E91E63;
  

}
ul#navigation ul, ul#navigation ul li#op2 ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#FBC02D;
  

}
ul#navigation ul, ul#navigation ul#op3 li ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#E91E63;
  

}
ul#navigation ul, ul#navigation ul#op4 li ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#E91E63;
  

}
ul#navigation ul, ul#navigation ul#op5 li ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#E91E63;
  

}
ul#navigation ul, ul#navigation ul#op6 li ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#E91E63;
  

}
ul#navigation ul, ul#navigation ul#op7 li ul {
  list-style: none;
  margin: 0;
  padding: 0;

  visibility:hidden;
  opacity:0;
  position: absolute;
  
  width:180px;
  background:#E91E63;
}

ul#navigation ul {
  top: 43px;
  left: 1px;
}

ul#navigation ul li ul {
  top: 0;
  left: 181px; /* strong related to width:180px; from above */
}

ul#navigation ul li {
  
  width:100%;
  border:0 none;
  border-bottom:1px solid #c9c9c9;
}

ul#navigation ul li a {
  background:none;
  padding:7px 15px;
  color:#ffffff;
  
  
  display:inline-block;
  border:0 none;
  
  width:250px;
}

.topnav {
  background:#E91E63;
  color:white;
  overflow: hidden;
}

.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background:#FBC02D;
  color: black;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

input {
  width: 10%;
  padding: 5px 20px;
  margin: 8px 8;
  box-sizing: border-box;
  font-size: 12px;
}

#return-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgb(0, 0, 0);
    background: rgba(0, 0, 0, 0.7);
    width: 50px;
    height: 50px;
    display: block;
    text-decoration: none;
    -webkit-border-radius: 35px;
    -moz-border-radius: 35px;
    border-radius: 35px;
    display: none;
    -webkit-transition: all 0.3s linear;
    -moz-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}
#return-to-top i {
    color: #fff;
    margin: 0;
    position: relative;
    left: 16px;
    top: 13px;
    font-size: 19px;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -ms-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}
#return-to-top:hover {
    background: rgba(0, 0, 0, 0.9);
}
#return-to-top:hover i {
    color: #fff;
    top: 5px;
}