* {
    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;
 }