.alerts_background{
    position: fixed;
    max-width: 450px;
    width: 90%;
    max-height: 100%;
    right: 0;
    top: 0;
    /*padding-top: 20px;*/
    padding-left: 20px;
    z-index: 3;
    overflow-y: auto;
    overflow-x: hidden;
    background-color: rgba(0,0,0,0);
}
.alerts_content_message:first-child{
    transition: margin-top 0.5s;
    margin-top: 10px;
}

.alerts_content_message{
    margin-bottom: 10px;
    min-height: 30px;
    line-height: 25px;
    max-width:370px;
    width: 90%;
    z-index: 1;
    position: relative;
    right: 0;
    font-size: 1em;
    border-radius: 5px;
    color: #444;
    background-color: #fbfbfb;
    padding: 10px;
    animation-name: show;
    animation-duration: 0.8s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    overflow:hidden;
    cursor: pointer;
}
.alerts_message{
    width: 90%;
    display: inline-block;
    padding-right: 5px;
}
.alerts_hide{
    right: -550px;
    animation-name: hide;
    animation-duration: 1s;
    animation-fill-mode: backwards;
}

@keyframes show {
    from {right: -550px;}
    to {right: 0;}
}
@keyframes hide {
    0%{
        right: 0;
    }
    50%{
        right: -550px;
    }
    100%{height: 0;min-height: 0;padding: 0;margin:0;}
}

@keyframes barra {
    0%{
        width: 0;
    }
    100%{
        width: 100%;
    }
}

.alerts_content_message:hover .alerts_barra{
    animation-play-state: paused;
}

.alerts_barra{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    animation-name: barra;
    animation-duration: 15s;
    animation-timing-function: ease;
}

.alerts_type_success{
    border-left: 8px solid #4cae4c;
}

.alerts_type_success .alerts_barra{
    background-image: linear-gradient(to right, #4cae4c, #0d460d); 
}
.alerts_type_info{
    border-left: 8px solid #337ab7;
}
.alerts_type_info .alerts_barra{
    background-image: linear-gradient(to right, #337ab7, #16344e); 
}
.alerts_type_warning{
    border-left: 8px solid  #eea236;
}
.alerts_type_warning .alerts_barra{
    background-image: linear-gradient(to right, #eea236, #5c3f17); 
}
.alerts_type_error{
    border-left: 8px solid #e92f2f;
}
.alerts_type_error .alerts_barra{
    background-image: linear-gradient(to right, #e92f2f, #7f1616); 
}
.alerts_close{
    float: right;
    cursor: pointer;
    width: 10%;
    line-height: 30px;
    text-align: center;
    font-weight: bold;
    font-size: 1.1em;
}
.alerts_close:hover{
    opacity: 0.7;
}