img
{
margin-bottom: 20px;	
}

body {
  background-color: lightcyan;
   text-align: center;
   font-size: 20px;
   font-family: 'Trebuchet MS', sans-serif;
}

h1 {
margin-top: 0px;
margin-bottom: 0px;
}

.kreisa {
  height:300px;
  width: 300px;
  position: fixed;
  overflow-x: hidden;
}

input[type=text] {
 border: black;
 text-align: center;
 font-size: 20px;
 border-radius: 20px;
 margin-left: 5px;
 margin-right: 5px;
 margin-bottom: 10px;
 width: 300px;
 background-color: gray;
}

input[type=password] {
  border: black;
 text-align: center;
 font-size: 20px;
 border-radius: 50px;
 margin-left: 5px;
 margin-right: 5px;
 margin-bottom: 10px;
 width: 300px;
}

.top {
margin-top: 10px;
 margin-bottom: 10px;
  padding: 10px;
  background-color: lightblue;    
  text-align: center;
}
p{
  margin-top: 0px;   
  margin-bottom: 0px;
}

.r1
{
  position: relative;
  margin-top: 0px;   
  margin-bottom: 60px;
}

.r2
{
  position: relative;
  margin-top: 0px;   
  margin-bottom: 120px;
}
.r3
{
  position: relative;
  margin-top: 100px;   
  margin-bottom: 120px;
}
.r4
{
  position: relative;
 margin-top: 180px;   

}


.button {
  width:250px;
  height: 50px;
  background-color:gray;
  border: none;
  color: black;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  transition-duration: 1s;
  cursor: pointer;
  border-radius: 25px;
  margin-top: 100px;
  margin-bottom: 100px;
}

.button:hover {
  background-color: lightblue;
  color: white;
}

.button:active {
  background-color: yellow;
 }