.header {
  background-color: red;
  height: 80px;
}

body {
  border: 1px;
  font-family: Verdana, Geneva, sans-serif;
  color: white;
}

.a {
  background: linear-gradient(to right, #606da8, #9faded);
  flex: 1;
}

.navigation {
  background: linear-gradient(#4833b5, #231287);
  position: static;
  width: 300px;
  height: 100vh;
  flex-shrink: 0;
  text-align: center;
  border-style: solid;
  border-color: #000000;
}

.navigation img {
  width: 100%;
  height: auto;
  display: block;
}

.page {
  background: linear-gradient(#000000, #1e1452);
  position: relative;
  flex: 1;
  height: 100vh;
  padding: 25px;
  border-style: solid;
  border-color: #000000;
}

.top {
  text-align: center;
  width: auto;
  height: auto;
  border-style: solid;
  border-color: #000000;
}

.all {
  border:1px solid black;
  display: flex;
}