* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #f5f5f5;
    font-family: Arial, Helvetica, sans-serif;
}

.clearfix::after {
    content: "";
    clear: both;
    display: block;
}

.todo {
    max-width: 960px;
    margin: 0 auto;
    margin-top: 65px;
    margin-bottom: 25px;
}

.list {
    float: left;
    width: 49%;
    margin-right: 20px;
}

.add-element {
    float: right;
    width: 48%;
}

.header {
    color: #000000;
    font-size: 21px;
    font-weight: normal;
}

.list-info {
    color: #8993ad;
    font-size: 16px;
    padding-top: 85px;
}

.list-tasks {
    margin-top: 35px;
    color: #8993ad;
    width: 100%;
}

.list-task {
    width: 100%;
    min-height: 135px;
    background-color: #ffffff;
}

.list-task.minimized {
    min-height: 60px;
}


.list-task:not(:first-child) {
    margin-top: 20px;
}

.list-task-header {
    display: block;
    padding: 20px;
    border-bottom: 2px solid #f7f7f7;
    color: #000000;
}

.list-task-header .list-close {
    display: inline-block;
    content: url('../img/clear-button.png');
    margin-left: 25px;
    cursor: pointer;
}

.list-task-header .list-minimize {
    margin-top: 7px;
    content: url('../img/dropdown-arrow.png');
    float: right;
    cursor: pointer;
}

.list-task-description {
    display: block;
    margin-top: 10px;
    padding: 20px;
    padding-top: 0;
    font-size: 14px;
}

.add-element-form {
    color: #8993ad;
    background-color: #ffffff;
    width: 100%;
}

.add-element-form-wrapper {
    box-sizing: border-box;
    margin-top: 35px;
    margin-left: 40px;
    margin-right: 40px;
    padding-top: 45px;
    padding-bottom: 35px;
}

.add-element-form label {
    display: inline-block;
    font-size: 14px;
    padding-bottom: 10px;
}

.add-element-form input[type="text"],
.add-element-form textarea {
    box-sizing: border-box;
    width: 100%;
    padding: 20px 14px;
    margin-bottom: 30px;
    background-color: #f5f5f5;
    border: 1px solid #ebebeb;
}

.add-element-form input[type="text"]:focus,
.add-element-form textarea:focus,
.submit-button:focus {
    border: 2px solid #000000;
    border-radius: 5px;
}

#name {
    height: 45px;
}

#description {
    height: 230px;
    resize: none;
}

.submit-button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    box-sizing: border-box;
    width: 225px;
    height: 55px;
    background-color: #2174fd;
    color: #ffffff;
    border: none;
}

.hidden {
    display: none;
}

@media (max-width: 1000px) { 
    .todo {
        padding-left: 40px;
        padding-right: 40px;
    }
}

@media (max-width: 746px) {
    .list {
        margin-right: 0;
    }
    .add-element {
        float: left;
    }
}

@media (max-width: 720px) {
    .todo {
        margin-top: 20px;
        margin-left: 20px;
        margin-right: 20px;
        padding: 0;
    }

    .list,
    .add-element {
        margin-top: 35px;
        clear: both;
        width: 100%;
    }
}


@media (max-width: 360px) {
    .submit-button {
        margin: 0 auto;
        width: 200px;
    }
}

@media (max-width: 338px) {
    .submit-button {
        width: 180px;
    }
}

@media (max-width: 317px) {
    .submit-button {
        width: 160px;
    }
}
@media (max-width: 297px) {
    .todo {
        margin-left: 5px;
        margin-right: 5px;
    }
    .submit-button {
        width: 190px;
    }
}