html,body{
    margin: 0;
    padding: 0;
    width: 100%;
    height: auto;
}
body{
    display: block;
    position: relative;
    width: 100%;
    height: 100vh;
    background: #83a4d4;  /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #b6fbff, #83a4d4);  /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #b6fbff, #83a4d4); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}
#wrap_app{
    display: block;
    position: absolute;
    width: 100%;
    max-width: 400px;
    height: auto;
    min-height: 400px;
    top: 50%;
    left: 50%;
    -webkit-transform: translateY(-50%) translateX(-50%);
    transform: translateY(-50%) translateX(-50%);
    text-align: center;
}
#wrap_title{
    display: block;
    position: relative;
    width: calc(100% - 40px);
    /*height: 138px;*/
    height: auto;
    padding: 20px;
    background: #fff;
    box-shadow: 0 0 10px 2px rgba(0, 0, 0, 0.2);
    border-radius: 24px;
    transition: 300ms;
}
#wrap_app h1{
    display: block;
    position: relative;
    width: calc(100% - 20px);
    padding-left: 10px;
    text-align: left;
    border-left: 10px solid #3796c2;
}
#wrap_app h2{
    display: block;
    position: relative;
    font-size: 32px;
}
#wrap_setting{
    display: block;
    position: relative;
    width: calc(100% - 40px);
    padding: 20px;
    font-weight: bold;
}
#wrap_setting input{
    width: calc(50% - 60px);
    margin: 0 4px;
    padding: 10px;
    background: none;
    border: none;
    border-bottom: 4px solid #fff;
    font-size: 22px;
    font-weight: bold;
    text-align: center;
    color: #000;
    transition: 150ms;
}
#wrap_setting input:focus{
    border-bottom: 4px solid #3796c2;
}
#start{
    display: block;
    position: relative;
    width: calc(100% - 20px);
    padding: 12px 10px;
    margin: 20px auto;
    background-color: #fff;
    color: #000;
    border: none;
    transition: 300ms;
    cursor: pointer;
}
#start:hover{
    color: #fff;
    background-color: #3796c2;
}
:focus {
    outline: none;
}
@media screen and (max-width: 440px) {
    #wrap_title{
        width: calc(100% - 60px);
        margin: 20px;
        padding: 10px;
    }
    #wrap_app h1{
        font-size: 24px;
    }
}