.list-project {

    top: 50px;
    position: relative;
    animation: fadein 1s;
}
@keyframes fadein {
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}

.item-project {

    background: #ffffff0d;
    padding: 20px 10px 25px 20px;
    text-align: center;
    display: inline-grid;
    font-size: 25px;
    text-decoration: none;
    color: #ffffff;
    border: #71fff8 1px solid;
    transition: 0.5s;
    border-radius: 2px;
}


.item-project:hover {
    color: #F8F8F8;
    background-color: rgba(265,265,265,0);
    border : white 1px solid
}

.cols-row {
    position: relative;
    width: 100%;
    display: grid;
    grid-gap: 20px;
}

.btn-skill {
    border: none;
    padding: 5px;
    cursor: pointer;
    background-color: #8effea26;
    color: white;
    border-radius: 15px;
}

.title-page {
    text-align: center;
    font-size: 50px;
    text-transform: uppercase;
    color: #FFFFFF
}

.content-heading {
    text-align: center;
}

header {
    position: fixed;
    background-color: #1d1f1e;
}

.page-container {
    background-image: url(../img/back4.3.png);
    background-size: cover;
    min-height: 1200px;
    height: 100%;
    margin-bottom: 0;
    overflow: hidden; 
    background-position: center;
    background-repeat: no-repeat;
}

i {
    margin-left: -15px;
}

@media screen and (min-width: 451px) and (max-width: 970px) {

    .container {
        margin-top: 100px;
    }

    .title-page {
        font-size: 25px;
    }

    .btn-skill {
        margin-bottom: 10px;
    }

    .cols-row {
        display: block;
    }

    .item-project {
        display: grid;
        margin-bottom: 15px;
    }

    .item-project span {
        font-size: 18px;
    }

    .item-project .skill-type {
        font-size: 13px;
    }

    .list-project {
        top: 30px;
    }

}


@media screen and (min-width: 200px) and (max-width: 450px) {

    .container {
        margin-top: 100px;
    }

    .title-page {
        font-size: 20px;
    }

    .btn-skill {
        margin-bottom: 10px;
    }

    .cols-row {
        display: block;
    }

    .item-project {
        display: grid;
        margin-bottom: 15px;
    }

    .item-project span {
        font-size: 15px;
    }

    .item-project .skill-type {
        font-size: 11px;
    }

    .list-project {
        top: 30px;
    }

}