html {
    font-size: 10px;
    color: #4e4d4d;
    font-family:'Roboto', sans-serif;
}
main {
max-width: 50rem;
margin: 2rem auto;
background: linear-gradient(30deg,#3dc0c0, #5bceae);
padding: 3rem 1.6rem 6rem 1.6rem;
border-radius: 4rem;
box-shadow: 0 2px 2px lightgray;
}
h1 {
    text-align: center;
    margin: 0;
    padding-bottom: 3rem ;
    font-size: 3rem;
}
section {
    background: white;
    font-size: 1.8rem;
    margin-bottom: 1.6rem;
    padding: 0 1.6rem;
    border-radius: 1rem;
    box-shadow: inset 0 2px 2px lightgray;
}
section > div {
    padding: 1.6rem 0;
}
.bill {
    display: flex;
}
.bill label {
    flex: 1;
    align-self: center;
}
.bill input {
    flex: 3;
    align-content:center;
}
input[type="number"]{
    font-family: inherit;
    background:#f4f4f5;
    font-size: 1.6rem;
    border: 1px solid lightgray;
    border-radius: 0.5rem;
    padding: 0.8rem 0 0.8rem 0.8rem;
    box-shadow: inset 0 2px 2px lightgray;
}
.space-between{
    display: flex;
    justify-content: space-between;
}
.total {
    font-size: 2rem;
    font-weight: bolder;
}
.range{
    appearance: none;
    width: 100%;
    height: 8px;
    background: #aaa;
    margin-top: 1.2rem;
    border-radius: 0.3rem;
    outline-color: #5bceae;
}
.range::-webkit-slider-thumb{
    appearance: none;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    background: aqua;
    cursor: pointer;

}
.range::-moz-range-thumb{
    appearance: none;
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    background: aqua;
    cursor: pointer;
    border:none;
}
.range::-moz-focus-outer{
    border: 0;
}