body {
  padding-top:10px;
}


.textbox { 
    margin: 5px;
    background: #E9E9EE; 
    height:35px; 
    width: 450px; 
    border-radius: 2em; 
    border: none; 
    color: #828282; 
    padding-left: 1.5em; 
    outline: none; 
    font-size: 20px;
    box-shadow: 0 4px 6px -5px hsl(0, 0%, 40%), inset 0px 4px 6px -5px hsl(0, 0%, 2%) 
} 

canvas{
  margin-top:25px;
}

p{
  margin-bottom:5px;
/*   font-size: 20px; */

  color: black;
  font-family: courier;
  font-size: 100%;
}

h1, h2, h3{
  font-family: Courier;
}

.css_button{
     margin: 5px;
     font-size: 17px;
     padding: 9px 18px;
     border-radius: 11px;
     border: solid 1px #3866a3;
     cursor: pointer;
     display: inline-block;
     font-family: Arial;
     color: #FFFFFF;
     text-shadow: 1px 1px 0px #5e5e5e;
     box-shadow: inset 1px 1px 0px 0px #bee2f9;
     background: -webkit-linear-gradient(90deg, #468ccf 5%, #63B8EE 100%);
     background: -moz-linear-gradient(90deg, #468ccf 5%, #63B8EE 100%);
     background: -ms-linear-gradient(90deg, #468ccf 5%, #63B8EE 100%);
     background: -o-linear-gradient(90deg, #468ccf 5%, #63B8EE 100%);
 }
 .css_button:hover{
     background: -webkit-linear-gradient(90deg, #63B8EE 5%, #468ccf 100%);
     background: -moz-linear-gradient(90deg, #63B8EE 5%, #468ccf 100%);
     background: -ms-linear-gradient(90deg, #63B8EE 5%, #468ccf 100%);
     background: -o-linear-gradient(90deg, #63B8EE 5%, #468ccf 100%);
 }
 .css_button:active{
     position: relative;
     top: 1px;
     box-shadow: rgba(255,255,255,0.2) 0 16px 0,inset rgba(0,0,0,0.3) 0px 4px 16px;
 }