* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
   font-family: sans-serif;
   list-style: none;
   text-decoration: none;
}

body {
   align-items: center;
   justify-content: center;
   min-height: 100vh;
   padding: 0px;
   background-color: #f1f5ff;
   color: #000000;
   font-family: "Roboto", sans-serif;
 }

header {
    position: static;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 8%;
    box-shadow: 0 5px 10px #3c6dce;
}

header .logo {
   font-size: 30px;
   font-weight: 800;
   color: rgb(221, 30, 30);
   transition: .5s;
   margin-left: 0px;
}

header .logo:hover {
   transform: scale(1.5);
}

header nav ul li {
   position: relative;
   float: left;
}

header nav ul li a {
   padding: 25px;
   color: black;
   font-size: 16px;
   display: block;
}

header nav ul li a:hover{
   background: rgb(130, 168, 243);
   color: #ffffff;
}

nav ul li ul {
   position: absolute;
   left: 0;
   width: 180px;
   background: #fff;
   display: none;
}

nav ul li ul li {
   width: 100%;
   border: 1px solid rgba(0, 0, 0,.1)
}

nav ul li ul li ul {
   left: 180px;
   top: 0;
}

nav ul li:hover > ul {
   display: initial;
}

table {
   width: 650px;
   border-top: 7px solid rgb(41, 43, 44);
   border-collapse: collapse;
   text-align: center;
   margin-bottom: 20px;
   border: 1px solid #dddddd;
 }
 
 td {
   text-align: center;
     padding: 10px;
     border: 2px solid rgb(41, 43, 44);
 }
  th {
   text-align: center;
   padding: 10px;
     border: 2px solid rgb(41, 43, 44);
  }
 
  .iz_smena{
   height: 500px;
    width: 500px" 
 }
 
 .tooltip {
   position: fixed;
   padding: 10px;
   border: 2px rgb(163, 210, 249);
   border-radius: 4px;
   text-align: center;
   color: #000000;
   background: #c3cfed;
 }

footer {
   position: static;
   top: 0;
   left: 0;
   right: 0;
   background: #fff;
   height: 50px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   padding: 0 46%;
   box-shadow: 0 5px 5px #3c6dce;
}

#admin {
   font-weight: 1000px;
    font-family: 'Times New Roman', Times, serif;
  font-size: 44px;
  background-color: rgba(2, 107, 254, 0.378);
  text-align: center;
  color: crimson;
}

#text {
   margin: 20px;
   width: 50;
}