body {
    font-size: 12pt;
    background: linear-gradient(to left, #bcdef6, #c4edd0);
    font-family: Arial, sans-serif;
}
header {
    
    display:block;
    position: fixed;
    top: 0; left:0;
    padding: 0px;
    margin: 0;
    background-color:#2d5986;
    width: 100%;
    z-index:2;
}
header h1 {
    text-shadow: none;
    color: white;
    font-size: 15pt;
} header span {color:red}
darkmode {
    background-color:black;
    color:white;
}
.d1, .d2 {
    color: black;
    box-sizing:border-box;
    background-color: white;
    opacity:0.7;
    border-radius: 20px;
    margin: 30px 10px;
    padding:10px;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
.d2 span { 
    border-bottom: 1px solid #55ACEE;
    padding: 5px;
    color: black;
    font-size: 20pt; font-weight: 900;
}
.d2 {
    padding:0px;
    opacity:1;
    text-align: center;
    z-index: 1;
}
.var {
    background: white;
    border-radius: 20px 20px 0 0;
    padding: 25px;
    transition: 0.6s;
    
}
.var:hover, button:hover { 
    background-image: linear-gradient(45deg, #34A853, #55ACEE, red);
    background-size: 600% 100%;
    color: white;
    animation: 2s variableColor infinite;
    animation-direction: alternate;
}
@keyframes variableColor { 
    0% { background-position: 0%}
    100% { background-position:100%;}
}
p {
    font-weight: 450;
}
h1 {
    color: white;
    text-shadow: 1px 1px 2px black, 0 0 25px blue, 0 0 5px darkblue;
}
input {
    box-sizing: border-box;
    padding:10px;
    width: 20%;
    border-radius:16px;
    border: none;
    border-bottom: 2px solid  #55ACEE;
    transition: 0.2s;
}
input:focus {width: 40%; outline:none}
button {
    box-sizing: border-box;
    background: linear-gradient(to right, #34A853, #55ACEE);
    border-radius: 10px;
    border: none;
    font-size: 10pt;
    color: white;
    padding: 10px;
    width: 90px;
}