style.css

* {
    box-sizing: border-box;
}

body,
html {
    margin: 0;
    padding: 0;
    background-color: #fff;
}

.container {
    display: flex;
    flex-wrap: wrap;
    margin: 0 auto;
    max-width: 976px;
    font-family: 'Roboto', sans-serif;
}

.header {
    background-color: #303F9F;
    width: 100%;
    position: relative;
    height: 260px;
    margin: 0;
    color: white;
    box-shadow: 0px 4px 7px 0px rgba(0, 0, 0, 0.75);
}

.head {
    width: 100%;
    position: relative;
    height: 179px;
}

.title {
    position: relative;
    text-align: center;
    font-family: 'Roboto Condensed', sans-serif;
    letter-spacing: 4px;
}

.tick_icon {
    width: 100px;
    position: absolute;
}

.stats {
    margin: 30px auto 10px auto;
    font-size: 18px;
}

@media only screen and (min-width:600px) {
    .stats {
        font-size: 25px;
    }
}

form {
    padding: 20px;
    margin: 0 auto;
    position: relative;
    display: block;
    top: 15px;
}

#text {
    display: block;
    font-size: 20px;
    margin-bottom: 20px;
    text-indent: 10%;
}

#inp {
    width: 80%;
    height: 55px;
    border-radius: 10px;
    border-top-right-radius: 26.5px;
    border-bottom-right-radius: 26.5px;
    text-indent: 25px;
    border: none;
    outline: none;
    font-size: 15px;
    background-color: #78a2b9;
    color: white;
    margin: 0 auto;
    position: relative;
    display: block;
    padding-right: 60px;
}

#btn {
    cursor: pointer;
    width: 55px;
    position: absolute;
    top: 22%;
    right: 11%;
    float: right;
    outline: none;
}

#list {
    width: 100%;
    padding: 0 1%;
}

#result {
    list-style: none;
    padding: 0;
}

li {
    min-height: 50px;
    padding-left: 10px;
    margin-bottom: 15px;
    font-size: 16px;
    color: white;
    /* color: #324D5C; */
    line-height: 22px;
    width: 100%;
    word-wrap: break-word;
    margin-right: 0;
    border-radius: 5px;
    position: relative;
    padding: 14px 60px 14px 14px;
}
.set-li-pad{
    transition: 0.3s;
    padding: 14px 210px 14px 14px;
}
.reset-li-pad{
    transition: 0.3s;
    padding: 14px 60px 14px 14px;
}

/* #element:hover {
    background-color: #f7d872;
} */

h1 {
    font-size: 50px;
    margin-bottom: 10px;
    font-weight: 500;
}

.buttons {
    width: 150px;
    height: 50px;
    top: 0;
    right: 0;
    visibility: hidden;
    float: right;
    position: absolute;
    /* width: 100%;
    height: 34px;
    display: block;
    bottom: 14px;
    position: relative; */
    
}

::placeholder {
    color: rgba(255, 255, 255, 0.75);
}

.listbuttons {
    width: 50px;
    float: left;
    height: 50px;
    border: none;
    color: #fff;
    cursor: pointer;
    outline: none;
    background: none;
}

.active .buttons .edit:hover {
    color: #303F9F;
}

.active .buttons .check:hover {
    color: green;
}

.delete:hover {
    color: maroon;
}

.active {
    background-color: #4caf50;
}

.active:hover {
    background-color: #63da67;
}

.inactive {
    background-color: #474747;
    text-decoration: line-through;
}

.inactive .buttons .edit {
    opacity: 0.65;
}

.inactive .buttons .check {
    color: green;
}

#n{
    transition: 0.5s;
}
.settings {
    width: 50px;
    height: 50px;
    top: 0;
    right: 0;
    float: right;
    position: absolute;
    outline: none;

    
}

#gear{
    outline: none;
}


.hide{
    transition: 0.1s;
    right: 10px;
    visibility: hidden;


}

.show{
    transition: 0.5s;
    right: 50px;
    visibility: unset;

}

@keyframes lol {
    0%   {display: none}
    100% {display: inline-block;}
}

.change-set-black{
    animation: myfirst 0.5s ease 0s;
    animation-iteration-count: 1;
}

@keyframes myfirst {
    0%   {color:white; left:0px; top:0px;}
    100% {color:black; left:0px; top:0px;}
}

.color-b{
    color:black;
}
.color-w{
    color:white;
}

.change-set-white{
    animation: mysecond 0.5s ease 0s;
    animation-iteration-count: 1;
}

@keyframes mysecond {
    100%   {color:white; left:0px; top:0px;}
    0% {color:black; left:0px; top:0px;}
}