common-todo.css

html,
body,
ul,
li,
h2{
    margin: 0;
    padding: 0;
}

button, input[type="text"] {
    margin: 0;
    padding: 0;
    border: 0;
    outline: none;
}

body{
    font-family: 'Helvetica Neue', Helvetica, sans-serif;
    background: #F2F2F2;
}

h1{
    margin: 15px auto;
    text-align: center;
    font-size: 48px;
    color: #99A7BD;
}

.hidden{
    display: none !important;
}

#logo{
    width: 108px;
    height: 29px;
    margin: 15px auto;
    background: url("img/todo-logo-small.png") no-repeat;
    background-size: 108px;
}

#header-main{
    margin: 0 2%;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

#add-todo-bar{
    overflow: auto;
}

#wrap-add-todo-text{
    float: left;
    width: 90%;
    padding: 8px 0 4px 0;
    background-color: #FFF;
    border-bottom: 1px solid #d9d9d9;
}

#add-todo-text{
    width: 100%;
    font-size: 22px;
}

#add-todo-button{
    float: left;
    width: 10%;
    height: 39px;
    background-color: #4d90fe;
    color: #FFF;
    font-size: 24px;
    border: 1px solid #3079ed;
}

#add-todo-button:hover{
    background-color: #3079ed;
}

#filter-bar{
    display: block;
    list-style: none;
    background-color: #f8f8f8;
    color: #636363;

}

.filter-tab{
    display: inline-block;
    box-sizing: border-box;
    height: 40px;
    width: 32%;
    text-align: center;
    line-height: 40px;
}

.filter-tab-selected{
    color: #4d90fe;
    border-bottom: 2px solid #4d90fe;
}

#todo-list{
    overflow: hidden;
    margin-top: 10px;
    margin-bottom: 10px;
}

.todo-item{
    display: block;
    overflow: hidden;
    padding: 16px 8px 10px 16px;
    margin-left: 2%;
    margin-right: 2%;
    margin-bottom: 4px;
    background-color: #FCFCFC;
    color: #484848;
    border-bottom: 1px solid #d9d9d9;
    font-size: 28px;
    text-overflow: ellipsis;
    white-space: nowrap;

    animation: add-item 0.4s;
    transition: border 0.1s;
}

@keyframes add-item
{
    from {
        box-sizing: border-box;
        height: 0;
        padding-top: 0;
        padding-bottom: 0;
    }
    to {
        box-sizing: border-box;
        height: 59px;
    }
}

@keyframes delete-item
{
    from {
        box-sizing: border-box;
        height: 59px;
        margin-bottom: 0;
    }
    to {

        box-sizing: border-box;
        height: 0;
        padding-top: 0;
        padding-bottom: 0;
        margin-bottom: 0;
    }
}

.todo-item-selected{
    border-left: 4px solid #4d90fe;
    background-color: #FFFFFF;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.todo-item-completed{
    text-decoration: line-through;
    color: #B7B7B7;
}

footer{
    text-align: center;
    color: #c1c1c1;
    font-weight: lighter;
    line-height: 20px;
}

#bottom-menu-bar{
    position: fixed;
    overflow: auto;
    bottom: 0;
    width: 100%;
    height: 50px;
    background-color: rgba(248,248,248,0.96);
    box-shadow: 0 -1px 2px rgba(0,0,0,0.2);

    animation: show-menu-bar 0.3s;
}
@keyframes show-menu-bar {
    from{
        bottom: -50px;
    }
    to{
        bottom: 0;
    }
}

@keyframes hide-menu-bar {
    from{
        bottom: 0;
    }
    to{
        bottom: -50px;
    }
}

#toggle-complete-button, #remove-selected-button{
    float: right;
    box-sizing: border-box;
    width: 90px;
    height: 30px;
    margin-top: 10px;
    margin-right: 2%;
    text-align: center;
    font-size: 16px;
    color: #FFFFFF;
}

#toggle-complete-button{
    background-color: #4d90fe;
}

#remove-selected-button{
    background-color: #DC5F5F;
}

/**
 * my checkbox style
 */
.my-checkbox {
    position: relative;
    width: 0;
    margin-left: 2%;
    margin-top: 12px;
}

/**
 * Create the box for the checkbox
 */
.my-checkbox label {
    cursor: pointer;
    position: absolute;
    box-sizing: border-box;
    width: 25px;
    height: 25px;
    top: 0;
    left: 0;
    background: #eee;
    border:1px solid #ddd;
}

/**
 * Display the tick inside the checkbox
 */
.my-checkbox label:after {
    opacity: 0.2;
    content: '';
    position: absolute;
    width: 15px;
    height: 5px;
    background: transparent;
    top: 6px;
    left: 2px;
    border: 3px solid #4d90fe;
    border-top: none;
    border-right: none;

    -webkit-transform: rotate(-45deg);
    transform: rotate(-45deg);
}

.my-checkbox label:before{
    opacity: 0.4;
    content: 'Select All';
    position: absolute;
    width: 70px;
    left: 30px;
    color: #3079ed;
    font-size: 16px;
    line-height: 25px;
}

/**
 * Create the checkbox state for the tick
 */
.my-checkbox input[type=checkbox]:checked + label:after,
.my-checkbox input[type=checkbox]:checked + label:before {
    opacity: 1;
}

#edit-todo{
    position: fixed;
    display: flex;;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,0.4);
}

#edit-todo-dialog{
    position: relative;
    width: 80%;
    margin: auto;
    background-color: #f8f8f8;
    box-shadow: 0 0 10px 5px rgba(0,0,0,0.2);
}

#edit-todo-dialog h2{
    display: block;
    margin-top: 20px;
    margin-left: 5%;
    margin-bottom: 20px;
    font-weight: bold;
    font-size: 20px;
}

#edit-todo-dialog label{
    display: block;
    margin-left: 5%;
    color: #636363;
    font-size: 16px;
}

#accept-edit-button, #cancel-edit-button{
    display: block;
    position: absolute;
    background: none;
    bottom: 0;
    right: 0;
    margin-right: 5%;
    margin-bottom: 15px;
    font-size: 18px;
    color: #009688;
}

#accept-edit-button{
    transform: translate(-125%, 0);
}

#edit-todo-text{
    background: none;
    width: 90%;
    margin-top: 10px;
    margin-left: 5%;
    margin-bottom: 60px;
    border-bottom: 2px solid #d9d9d9;
    font-size: 18px;
 }

#edit-todo-text:focus{
    border-bottom: 2px solid #009688;
}