:root{
    --dark: #374151;
}
body{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background: var(--dark);
    
}


/* Styling paragraph elements */
p{
    color: gray;
    display: inline;
}
p:hover{
    cursor:pointer;
}
/* Styling placeholder */
::placeholder{
    font-size: large;
}
/* styling of heading */
#heading{
    font-size: 30px;
    margin-left: 140px;
    margin-top: 10px;
    margin-bottom: 10px;
}
#heading:hover{
    opacity: .5;
    color:blue ;
    
}
/* Styling header, footer and main sections */
header,footer{
    margin: 2%;
    display: flex;
    justify-content: space-between;
}
header , main{
    margin: 2%;
    border-bottom: 0.5px solid gray;
}
#container{
    background-color: aliceblue;
    margin: auto;
    margin-top: 3%;
    width: 500px;
    height: auto;
    border: 1px solid black;
    border-radius: 1rem;
}

/*styling header and internal fields of header*/
header{
    display: flex;
    flex-direction: column;
    height: 15%;
}
#add-task{
    display:flex;
    position:relative;
    height: 80%;
    justify-content: space-between;
}
#header-bottom{
    display: flex;
    justify-content: space-between;
    font-size: smaller;
}
#input-task{
    width: 100%;
    height: 90%;
    border:none;
    border-radius: 0.5rem;
}
.add-btn{
    display: none;
    font-size: medium;
    position: absolute;
    top: 2%;
    right: 2%;
    background-color:white;
    border: none;
    border-radius: 0.5rem;
    height: 80%;
}

.add-button-active{
    display: block;
    font-size: medium;
    position: absolute;
    top: 2%;
    right: 2%;
    background-color:white;
    border: none;
    border-radius: 0.5rem;
    height: 80%;
}


/* Styling footer section */
footer{
    word-spacing: 3px;
    font-size: smaller;
}
/* Styling list elements of main section */
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
  ul li {
    padding: 10px;
    padding-left: 0;
    display: flex;
    justify-content: space-between;
    align-items: inherit;
    align-items: center;
    overflow:hidden;
}
#task-list input:checked + label {
    text-decoration: line-through;
}
.highlight:active{
    color: black;
}

.delete{
    display: none;
}

li:hover .delete{
    display: block;
}