body {
    /*background-color: #fffaf0;*/
    background-color: #eee;
}
.text_size1 {
    font-size: 3em;;
}

.text_size2 {
    font-size: 2em;;
}
.flex_block {
    display: flex;
}
.inline {
    display: inline-block;
}
.switch {
    appearance: none;
    vertical-align: text-bottom;
    outline: 0;
    cursor: pointer;
    border-radius: 3em;
    background: #fff;
    width: 4rem;
    height: 2rem;
    line-height: 3rem;
    padding-left: 1rem;
    padding-right: 1rem;
    font-size: 70%;
    box-shadow: inset -2rem 0 0 #727e96, inset 0 0 0 1px #727e96;
    transition: box-shadow 0.15s;
}
.switch::before {
    content: "✕";
    float: right;
}
.switch::before, .switch::after {
    color: #fff;
    font-weight: bold;
}
.switch:checked {
    box-shadow: inset 2rem 0 0 #5cb85c, inset 0 0 0 1px #5cb85c;
}
.switch:checked::before {
    content: "✓";
    float: left;
}
.header_title {
    font-size: 40px;
}
.tip_text {
    font-size: 30px;
}
.tip_text_image {
    margin-left: 4px;
    cursor: pointer;
}
.tip_text_image img {
    max-width: 20px;
    max-height: 20px;
}
.answer_input_block {
    margin-left: 146px;
}
.answer_input_block input[type="text"] {
    padding: 20px 10px;
    height: 20px;
    width: 50%;
    font-size: 30px;
    margin-right: 4px;
    margin-bottom: 4px;
}
.main {
    justify-content: space-between;
}
.main > div {
    width: 49%;
    max-width: 49%;
    overflow: hidden;
}
.statistics_title {
    font-size: 20px;
}
.statistics_article {
    margin: 16px 0;
}
.button {
    background: #5cb85c;
    font-size: 30px;
    font-weight: bold;
    text-align: center;
    letter-spacing: 0.15em;
    padding: 20px 19px;
    /*margin-bottom: 100px;*/
    margin-top: 50px;
    margin-right: 30px;
}
.header_article {
    font-size: 24px;
}
.modal_window {
    display: none;
    position: fixed;
    z-index: 1;
    padding: 10vh 0;
    left: 0;
    top: 0;
    width: 100%;
    height: 80vh;
    overflow-y: scroll;
    background-color: rgba(0,0,0,0.4);
}
.modal_window.active {
    display: block;
}
.modal_content {
    background-color: #fefefe;
    margin: auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    position: relative;
}
.close {
    position: absolute;
    right: 20px;
    top: 20px;
    color: #aaaaaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}
.close:hover, .close:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}
@media (max-width: 1375px) {
    .answer_input_block {
        margin-left: 48px;
    }
}
@media (max-width: 1100px) {
    .answer_input_block {
        margin-left: 12px;
    }
    .answer_input_block input[type="text"] {
        padding: 10px 4px;
        font-size: 18px;
    }
    .header_title {
        font-size: 28px;
    }
    .tip_text {
        font-size: 20px;
    }
}
@media (max-width: 768px) {
    .main {
        display: block!important;
    }
    .main > div {
        width: 100%;
        max-width: 100%;
        margin-top: 24px;
    }
    .header_title {
        font-size: 36px;
    }
    .header_article {
        font-size: 24px;
    }
    .header_title {
        font-size: 24px;
        margin: 12px 0;
    }
    .button {
        font-size: 24px;
        padding: 12px 16px;
    }
    .statistics_article {
        font-size: 20px;
        margin: 8px 0;
    }
    .statistics_title {
        font-size: 24px;
    }
}

x-field{
    display:inline;
    position:relative;
}
x-field .correct {
    position:absolute;
    padding:0 5px;
    right:0;
    color: green;
    font-size: 30px;
    display: none;
}

x-field .incorrect {
    position:absolute;
    padding:0 5px;
    right:0;
    color: red;
    font-size: 30px;
    display: none;
}

h1 {
    font-size: 2em;
}

.showmobile { display: none; }
@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px){ .showmobile { display: inline; }}


ul {
  list-style: none;
}

ul li:before {
  content: '✓';
}

.suggestion {
    font-size: 1.5em;
}

.description_text {
    font-size: 1.5em;
}