body {
    background: #ffffff;
    text-decoration: none;
    width: 100%;
    height: 100%;
}

body, form, div, p, a, img, h1, h2, h3, h4, h5, h6, table, table tr, table td {
    border: none;
    color: #000000;
    font-family: Trebuchet 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    font-size: 12px;
    font-style: normal;
    font-weight: normal;
    margin: 0;
    padding: 0;
}

input,
textarea,
select {
    outline: none;
    font-family: Arial;
    font-size: 12px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

input::-moz-focus-inner {
    border: 0;
    padding: 0;
}

a {
    text-decoration: underline;
    outline: none;
}

a:hover {
    text-decoration: none;
}

h1, h2 {
    font-size: 28px;
    padding: 0 0 10px 0;
    color: #eb7e72;
}

body {
    background-color: #3b3f45;
}

.clear {
    clear: both;
    font-size: 0;
    line-height: 0;
    height: 0;
}

*{transition: all .1s ease-in;}

.mainer {
    max-width: 600px;
    padding: 0 15px;
    margin: 0 auto;
}

header {
    background-color: #4a4f56;
    text-align: center;
    line-height: 20px;
    display: block;
    padding: 28px 0 5px 0;
}

header h1 {
    font-weight: bold;
}

header h2 {
    font-size: 20px;
}

.list {
    color: #ffffff;
    font-size: 20px;
    line-height: 40px;
    padding: 5px;
    list-style: none;
    background-size: 600px;
    background-color: #88839e;
    border: 2px solid transparent;
}

li:nth-of-type(even) {
    background-color: #7a7593;
}

span{
    font-size: 14px;
    opacity: 0.5;
}

span::before {
  content: "(";  
}

span::after {
    content: ")";  
  }

footer {
    line-height: 40px;
    font-size: 20px;
    background-color: #4a4f56;
    text-align: center;
    margin: 25px 0;
}

li:hover {
    border: 2px solid #ffffff;
    background-color: #625e77;
}

li:active {
    background-color: #eb7e72;
}

input[type=checkbox]:checked+label {
    text-decoration: line-through;
    opacity: 0.5;
  }