*:focus {
    outline: none;
}


.form_hint {
    background: #d45252;
    border-radius: 3px 3px 3px 3px;
    color: white;
    margin-left: 8px;
    padding: 1px 6px;
    z-index: 999; /* hints stay above all other elements */
    position: absolute; /* allows proper formatting if hint is two lines */
    display: none;
}

    .form_hint::before {
        content: "\25C0"; /* left point triangle in escaped unicode */
        color: #d45252;
        position: absolute;
        top: 1px;
        left: -6px;
    }

.contact_form label {
    width: 150px;
    margin-top: 3px;
    display: inline-block;
    float: left;
    padding: 3px;
}

.contact_form input {
    padding: 5px 8px;
}

    .contact_form input:focus + .form_hint {
        display: inline;
    }

    .contact_form input:required:valid + .form_hint {
        display: none;
    }

input:required {
    border: 1px solid red;
    background: #fff 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) no-repeat 98% center;
}

input:focus:invalid {
    background: #fff url(data:image/png;base64,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) no-repeat 98% center;
    box-shadow: 0 0 5px #d45252;
    border-color: #b03535
}

input:valid {
    border: 1px #000 solid;
    box-shadow: 0 0 0px #d45252;
    border-color: #53D14C;
}

input:required:valid {
    border-color: #53D14C;
    background: #fff url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAANCAIAAAASSxgVAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyJpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw/eHBhY2tldCBiZWdpbj0i77u/IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8+IDx4OnhtcG1ldGEgeG1sbnM6eD0iYWRvYmU6bnM6bWV0YS8iIHg6eG1wdGs9IkFkb2JlIFhNUCBDb3JlIDUuMy1jMDExIDY2LjE0NTY2MSwgMjAxMi8wMi8wNi0xNDo1NjoyNyAgICAgICAgIj4gPHJkZjpSREYgeG1sbnM6cmRmPSJodHRwOi8vd3d3LnczLm9yZy8xOTk5LzAyLzIyLXJkZi1zeW50YXgtbnMjIj4gPHJkZjpEZXNjcmlwdGlvbiByZGY6YWJvdXQ9IiIgeG1sbnM6eG1wPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvIiB4bWxuczp4bXBNTT0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wL21tLyIgeG1sbnM6c3RSZWY9Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9zVHlwZS9SZXNvdXJjZVJlZiMiIHhtcDpDcmVhdG9yVG9vbD0iQWRvYmUgUGhvdG9zaG9wIENTNiAoV2luZG93cykiIHhtcE1NOkluc3RhbmNlSUQ9InhtcC5paWQ6ODY5MzdFMzU1N0JEMTFFNDlBRkM5MTBBNEQwN0E4NDEiIHhtcE1NOkRvY3VtZW50SUQ9InhtcC5kaWQ6ODY5MzdFMzY1N0JEMTFFNDlBRkM5MTBBNEQwN0E4NDEiPiA8eG1wTU06RGVyaXZlZEZyb20gc3RSZWY6aW5zdGFuY2VJRD0ieG1wLmlpZDo4NjkzN0UzMzU3QkQxMUU0OUFGQzkxMEE0RDA3QTg0MSIgc3RSZWY6ZG9jdW1lbnRJRD0ieG1wLmRpZDo4NjkzN0UzNDU3QkQxMUU0OUFGQzkxMEE0RDA3QTg0MSIvPiA8L3JkZjpEZXNjcmlwdGlvbj4gPC9yZGY6UkRGPiA8L3g6eG1wbWV0YT4gPD94cGFja2V0IGVuZD0iciI/PoNMkncAAAE/SURBVHjaYvz//z8DGNz9fvv6x8ufGL7wMfAo8qtpc+owwAAjUNHPfz/Wvlq19+3Ol79fQUTFWcV0ePRTpTN5WHhBin7/+zX5Uf/e97uBHA4mDrjuH/9+aHGp1Sl1ANUx7Xi5GagCKI2mAkje+/Fo05v1//79Yzr0aS8DKuBn5suQyATaCFQKdMOLX8+ZgMohZihxyEFU1ErXefLZC7MKALlAVz7984QFqByoCCiXK1t28eNZBW4FWWaRyid1177dAopD7GUCGgvR0XCvSp/fWJtdBa4C4hXO/6wsQK9CHA5RB7QFrgLiQQVOVSZXIReIsUDy499PcBUQ4CUUDAoCHV6jHKlCuPVwM4Ak0I8OIk7QEIfEyaZX65//fAj0LNATQDcAbQDqR0QLhPWXgeH7n88QNjczDyMjI9xSgAADACGznSQseWn3AAAAAElFTkSuQmCC) no-repeat 98% center;
    box-shadow: 0 0 0px #d45252;
}

ul {
    background: #F0F0F0;
    width: 450px;
}

li {
    list-style-type: none;
    height: 35px;
}

    li:nth-child(1), li:nth-child(6) {
        background-color: green;
        margin-bottom: 10px;
        margin-left: -40px;
        padding-left: 10px;
        line-height: 40px;
        color:white;
        font-weight:800;
    }